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Volume 23 Number 8, May 2018 ISSN 1531-7714
How to Perform a Literature Review with Free and Open
Source Software
Joshua M. Pearce, Michigan Technological University and Aalto University
As it provides a firm foundation for advancing knowledge, a solid literature review is a critical feature
of any academic investigation. Yet, there are several challenges in performing literature reviews
including: i) lack of access to the literature because of costs, ii) fracturing of the literature into many
sources, lack of access and comprehensive coverage in many databases and search engines, and iii)
the use of proprietary software lock-in strategies for bibliographic software, which can make porting
literature reviews between organizations cumbersome and costly. These challenges often result in
poor quality literature reviews completed by a single researcher unfamiliar with the approaches to the
same research in other sub-fields and static reviews that are often lost to the scientific community.
In this paper, an open source approach will be expanded to the application of improving the quality
of literature reviews by providing best practices. Although there are many types and goals of literature
reviews, it is found that all of them can be improved using a tool chain of free and open source
software (FOSS) and methods. Specifically, this paper will provide a clear framework for i)
comprehensive searching and obtaining access to the literature, ii) the use of FOSS for all steps
including browsing, bibliographic software, and writing and iii) documenting a literature review to
encourage collaboration of a dynamic document that lives into the future. This approach solves the
current challenges of literature reviews and provides benefits of lower labor and economic costs,
improved researcher control, and increased potential for collaboration. Finally, the challenges of using
this approach and methods to overcome them are reviewed and future work is described.
A solid review of the prior relevant literature is a
critical feature of any academic investigation as it
provides a firm foundation for advancing knowledge
(Webster & Watson, 2012). Without a good literature
review, a researcher cannot perform significant research
in any field (Boote & Beile, 2005) whether it is for a
research article, a critical review for coursework (Jesson
& Lacey, 2006) or a dissertation (Randolph, 2009). Levy
and Ellis argue that an effective literature review should:
i) methodologically analyze and synthesize quality
literature, ii) provide a foundation to a research topic and
methodology, and iii) demonstrate that the proposed
research would advance the research field’s knowledge-
base (2006). Literature reviews help researchers avoid
redundancy, establish a context and significance of their
research topic, identify primary methodologies in the
field and determine what needs to be done to solve
research problems (Hart, 1998). A well-executed
literature review can also be a legitimate and publishable
document and can be some of the most valuable (and
cited) type of scholarly work if it is a systematic literature
review (Cooper, 1988a; Bettany-Saltikov, 2012; Boote &
Beile, 2005).
There are several challenges in performing literature
reviews. First, some scholars have difficulty gaining
access to all of the literature itself due to the collateral
damage of intellectual property (Boldrin & Levine,
2008). The unintended consequences of copyright
restrictions and paywalls narrow access to the peer-
reviewed literature (Lewis, 2012) to the point that even
Harvard University is challenged to pay for it (Sample,
2012). Researchers simply cannot review what they
cannot read. Secondly, there is also a fracturing of the
Practical Assessment, Research & Evaluation, Vol 23 No 8 Page 2
Pearce, Perform a Literature Review with Free and Open Source Software
literature into many topical journals, interdisciplinary
journals, and various society proceedings, which makes
it more challenging to perform a comprehensive
literature review. This is a particular problem in some
fields such as in engineering, which has historically
suffered from weak literature reviews (Shaw, 1995) and
can often be artificially arranged in academic and
research society silos. For example, electric battery-
related research is published in IEEE, ACS, MRS, and
ASME societies as well as conventional journals. Few
scholars are members of all of the relevant organizations.
Coupled to this there are also challenges related to the
lack of comprehensive coverage of the literature in many
databases, lack of access to all databases, the poor quality
of search engines and the difficulty of getting consistent
results from them (Budgen & Brereton, 2006). Finally,
the use of proprietary software lock-in strategies (Zhu &
Zhou, 2012) for bibliographic software such as
EndNote, Reference Manager, Papers, etc. raises costs
and can make porting literature reviews between
universities, between firms, and from universities to
industry cumbersome and costly. For example, a social
science Ph.D. student using a ‘free’ version of a
proprietary software tool while at university A may
create a detailed literature review database on her thesis
topic. However, she may not be able to access upon
graduation even if employed as a professor at university
B, without paying for the software costs or subscriptions
not supported by her new employer. These three
challenges often result in poor quality literature reviews
completed by a single researcher unfamiliar with the
approaches to the same research in other sub-fields and
static reviews that are often lost to the scientific
community as only components of a review are used in
a standard research article.
In this paper an open source approach will be
described to overcome many of these challenges in
reviewing the literature. An open source approach is
well-established to provide improved product
innovation over proprietary techniques of technical
development (Deek, & McHugh, 2007; DiBona &
Ockman, 1999; Lakhani & Von Hippel, 2003; Raymond,
1999; Söderberg, 2015). This has been proven most
effective at software development because free and open
source software (FOSS) provides open innovation and
diversification (Colombo, et al., 2014; Henkel, et al.,
2014; Dodourova & Bevis, 2014), organizational
innovation (Alexy, et al., 2013), cumulative innovation
(Boudreau, & Lakhani, 2016), development efficiency
(Hienerth, et al, 2014), avoids redundant work (Årdal &
Røttingen, 2016), the quality of code is superior
(Söderberg, 2015), and it encourages more creativity
(Martinez, 2015). The open source approach is now also
gaining traction in free and open source hardware most
notably for scientific tools (Baden et al., 2015; Coakley
& Hurt, 2016; Pearce, 2013). Regardless of the
technology, open source is cost effectiveness for use
(Pearce, 2013; Petch, et al., 2014; Riehle, 2007;
Wittbrodt, et al., 2013) and development (Hawkins,
2004; Pearce, 2015a; 2015b; 2017). In this paper, the
open source approach will be expanded to the
application of improving the quality of literature reviews.
Although there are many types and goals of literature
reviews (Cooper, 1988b), all of them can be improved
using a tool chain of free and open source software and
methods. Specifically, this paper will provide a clear
framework for i) comprehensive searching and obtaining
access to the literature, ii) the use of FOSS for all steps
including browsing, bibliographic software, and writing
and iii) documenting a literature review to encourage
collaboration of a dynamic document that lives into the
future.
Comprehensive Searching and Gaining Access to
the Literature
Previously researchers were dependent on having
paid access (normally through their institution) to one or
more of the major proprietary repositories such as Web
of Science, Engineering Village, Academic Onefile,
ProQuest, Ulrichsweb, Scopus, Science Direct
(Elsevier), Wiley Online Library, JSTOR, IEEE Xplore,
ACS Publications, and EBSCO among others. Although
costly these databases were often incomplete and biased.
For example, Web of Science is biased towards science
(instead of engineering), English language journals,
against particular fields and disciplines and has extremely
limited coverage of non-journal sources (Harzing, 2017).
Today there a number of no cost academic search
engines, which are summarized in Table 1.
As can be seen in Table 1, a number of the search
engines specifically focus on open access articles, which
are on the rise and constitute at least 28% of the
literature (Piwowar, et al., 2017). In addition to these
dedicated repositories and search engines shown in
Table 1, the Directory of Open Access Journals also
provides links to the open access publisher’s websites
that all have searchable and freely available open access
Practical Assessment, Research & Evaluation, Vol 23 No 8 Page 3
Pearce, Perform a Literature Review with Free and Open Source Software
Table 1. No cost academic search engines for published papers and preprints.
Name Website Description
Comprehensive
Academia www.academia.edu Aplatformforacademicstoshareopenaccessresearch
papersandpreprints.Over61millionacademicsusethesite.
BielefeldUniversity’sAcademic
SearchEngine(BASE)
www.base‐search.net Morethan100milliondocumentswithopenaccessfor60%of
theindexeddocuments.
DirectoryofOpenAccess
Journals
doaj.org Acommunity‐curatedonlinedirectorythatindexesand
providesaccesstohighquality,openaccess,peer‐reviewed
journals.67millionarticlesareindexed.
GoogleScholar scholar.google.com Reasonablycomprehensive,indexesacademicinformation
fromvariousonlinewebresources
MicrosoftAcademicResearch academic.microsoft.com Reasonablycomprehensive,172millionpublications indexed
OSFPrePrints(CenterforOpen
Science)
osf.io/preprints Searchablepreprintsoverawiderangeofdisciplines(contains
2.1million).
Preprints(MDPI) www.preprints.org Aplatformdedicatedtomakingearlyversionsofresearch
outputsavailable,includingoriginalresearcharticlesand
reviews.
ScienceOpen www.scienceopen.com Professionalnetworkingplatformforscholarstoenhance
theirresearchintheopenwith40millionrecords.
SemanticScholar(Allen
Institute)
www.semanticscholar.org Anacademicsearchenginethatutilizesartificialintelligence
methodstoprovidehighlyrelevantresultsandnoveltoolsto
filterthemwithease.
ResearchGate www.researchgate.net Asocialnetworkingwebsiteforresearchers.Containsmore
than100millionpublicationpages.
Specialty
BiolineInternational www.bioline.org.br Focusedonpublichealth,foodandnutritionalsecurity,food
andmedicineandbiodiversity
BioOne www.bioone.org Full‐textdatabaseofmorethan200leadingjournalsinthe
biological,ecological,andenvironmentalsciences.
CERNDocumentServer cdsweb.cern.ch Articles,reportsandmultimediacontentinhighenergy
physics
Cornell’sArXiv arxiv.org Openaccessto1.3millione‐printsinphysics,mathematics,
computerscience,quantitativebiology,quantitativefinance,
statistics,electricalengineeringandsystemsscience,and
economics.
Educational
ResourcesInformationCenter
(ERIC)
eric.ed.gov Coverseducationresearchandinformationforeducators,
researchers,andthegeneralpublic.Enablessearchingfor
peerreviewonlyandfulltextavailability.
Mendeley(Elsevier) www.mendeley.com/research‐
papers
Afreereferencemanagerandacademicsocialnetwork.
OrganicEprints orgprints.org Openaccessarchiveforpapersandprojectsrelatedto
researchinorganicfoodandfarming.
PennState’sCiteSeerX citeseerx.ist.psu.edu Focusedprimarilyontheliteratureincomputerand
informationscience.
PubMed www.ncbi.nlm.nih.gov/pubmed Morethan28millioncitationsforbiomedicalliteraturefrom
MEDLINE,lifesciencejournals,andonlinebooks.
SocialScienceResearch
Network
www.ssrn.com/en SSRN´seLibrary provides0.7millionresearchpapersacross30
disciplines.
U.S.government’sScience.gov www.science.gov Covers60databasesandover2,200scientificwebsitesto
providefullaccesstomorethan200millionpagesofU.S.
federalscienceinformation.
Practical Assessment, Research & Evaluation, Vol 23 No 8 Page 4
Pearce, Perform a Literature Review with Free and Open Source Software
content. Scholars without access to pay walled literature
also can:
1) directly request copies of papers from the
authors via email,
2) request from others in the academic community
that do have access using the Twitter hashtag
#icanhazpdf,
3) acquire articles through various torrents, Library
Genesis, openaccessbutton.org, or on the
anonymous website Reddit/r/scholar.
4) attempt interlibrary loans (at some institutions
pdf scans are provided).
Providing legal open access preprints authors can
take advantage of the often dramatic increases in
citations for open access articles (Antelman, 2004;
Harnad & Brody, 2004, Niyazov, et al., 2016). Thus,
there is already an incentive to encourage scholars to
share their work. Online open access journals provide
wide exposure for authors, which are using publishing
there at an increasing rate. For example, researchers
access and download articles from Practical Assessment,
Research & Evaluation (PARE) from all over the world
daily (see data available on http://pareonline.net/). Not
all of the literature, however, is open access nor
accessible in the databases and by the techniques listed
above. In some cases to access seminal papers, which
must be read, reviewed and referenced for a complete
literature review, scholars must gain access through paid
databases. This can be particularly challenging for
researchers not affiliated with a large organization, from
developing countries and those that conduct research at
teaching universities. The latter, for example, often
conduct research on teaching, learning and pedagogy,
but lack access to the full literature through their schools
and dedicated funding for purchasing access.
A neuroscience scholar from Kazakhstan in this
situation without adequate funding, was frustrated with
lack of access and founded Sci-Hub, the world's largest
pirate site for academic papers (at least 50 million)
(Bohannon, 2016). Sci-Hub has been sued a number of
times and continues to change its url. Interestingly,
critics of Sci-Hub in Science have complained that many
users can access the same papers through their libraries
legally, but turn to Sci-Hub for convenience (Bohannon,
2016). Clearly, there is a need for a legal and convenient
method to gain full access to all of the literature for all
scholars. Fortunately, funding agencies are now also
demanding open access posting and there has been a call
for such organizations to begin directly sponsoring and
publishing open access articles (Pearce, 2016). For
example, since 2009, the NIH has demanded that all
research they fund “submit or have submitted for them to the
National Library of Medicine's PubMed Central an electronic
version of their final, peer-reviewed manuscripts upon acceptance for
publication, to be made publicly available no later than 12 months
after the official date of publication.”(NIH, 2018). India’s
(Chawla, 2014), Portugal’s (Carvalho, et al., 2017),
Denmark’s and some of Europe’s (DTU, 2018) major
science funders have done the same. The rational
funding agencies use for this demand is that the public
has already paid for the research through tax funding
should be able to access the results for free. Private
foundations are also moving in this direction of
requiring open access such as the Gates Foundation
(Van Noorden, 2014). Most of the major conventional
publishers also maintain some legal and allowed form of
preprint publishing so it is within reason to assume that
in the near future the majority of literature will be
available open access and discoverable by the databases
shown in Table 1.
Literature Review Steps
Managing the literature can be done completely
electronically using FOSS and will be covered in detail in
the next section. Although the core process is of
performing a literature review this way is the same as the
historical method accomplished largely in hardcopy
format the conventional process is enhanced. With
FOSS literature reviews can be executed faster, be more
complete, portable and potentially collaborative.
This section will briefly cover the steps in
performing a high-quality literature review. First, using
the academic search engines shown in Table 1 the
literature review can occur. For researchers new to a
field, one of the best ways to get started is to find recent
review articles or major studies on the subject of interest.
Next the researcher should read them and then 1) read
the papers in the reference list from the review papers
backwards in time and 2) read articles that cite the
reviews forward in time, to populate their own literature
review. Care should be taken to ensure that any
information taken from review articles is not secondary
(i.e. only primary sources should be cited after having
read them). In addition, these literature review article are
normally out of date (because of the rapid rate of
technical progress) as well as they might have been
Practical Assessment, Research & Evaluation, Vol 23 No 8 Page 5
Pearce, Perform a Literature Review with Free and Open Source Software
biased or poorly done. Thus, the researcher can continue
by taking a systematic approach to searching the
literature both backwards and forwards in time. Going
backwards not only should the papers referenced be
reviewed, but the author’s names and the keywords in
those papers can also be used. This can be repeated for
a second level backwards (e.g. looking at the references,
referenced in the papers originally referenced in the
review article) or more depending on the depth
necessary for the review (Levy & Ellis, 2006). Similarly,
going forward if new authors cite the review articles then
individual searches can be run on these authors. To
accelerate the process the corresponding authors names
on a collaborative paper are the most valuable to search
as they normally represent the senior researcher and the
one with the longest literature record.
Although all sources should be covered, researchers
should focus primarily on the peer-reviewed literature.
Often there may be key information that is not available
yet in the peer-reviewed literature (e.g. new commercial
technologies) and such sources can be used, but caution
is necessary to ensure bias is not introduced (and it
should be noted that corporate sponsorship can impact
any literature). Thus, the use of non-peer-reviewed
articles (e.g. technical journals, trade magazines, blogs,
or newspapers) should be restricted to factual
information. In addition, for some fields it may also be
important to search through the patent databases (e.g.
USPTO patent database, Espacenet, or Google Patents).
In addition, researchers may want to limit their searches
to an open source database and website that provides
only inactive patents, which are in the public domain
(Nilsiam & Pearce, 2016). This type of search can be
accessed at http://freeip.mtu.edu/ made available by
Michigan Technological University. Researchers must be
extremely careful with the use of patents in literature
reviews, as there is both a clear economic conflict of
interest and patent applications do not go through the
rigor of peer review. They are essentially legal documents
made up of claims reviewed by the patent office for
novelty and non-obviousness. Thus, all the writing in a
patent that is not a claim does not necessarily have
academic merit (e.g. similar to a blog post, anyone can
write anything in the text of a patent). Literature of
quality levels in between these two types of sources such
as non-peer reviewed conference proceedings can also
be used with caution with the reviewers themselves
needing to judge carefully the quality and reliability of
the work. Finally, all sources including those published
in the peer-reviewed literature should be critically
analyzed before accepting another researcher’s findings
and interpretations as valid to be included in the review.
If errors are made at this stage of gathering the
relevant literature with the choice of keywords the
results can be of poor quality or irrelevant. Thus,
researchers should strive to use as many synonyms and
alternative ways of expressing keyword or key phrases
when using the search engines in Table 1. It is also useful
to search with quotation marks around short phrases to
ensure the most relevant literature is provided first. In
general, broader and more generalizable terms will
capture a wider range of the literature and should be used
initially. In addition, care must be taken to look beyond
temporarily popular buzzwords that have a short lifetime
in the literature. The theories underlying the buzzwords
have a longer life (Robey et al. 2000). Gathering all of
the previous literature relevant to a specific area of
scholarship is challenging. To determine if the literature
is relevant, the entire electronic record does not need to
be initially read. Randolph recommends eliminating
most likely irrelevant studies using just the title and
abstract (2009). Finally, the end of the search is indicated
when additional searches provide no new citations and
articles cited in the most-recently-discovered literature
have already been included in the review.
After all of the literature has been found, it must be
read and the data contained in the articles processed into
information that can serve as a foundation for new
research (Bem, 1995). Following the guidelines for
organizing the literature review on a wiki (detailed
below) entails making a bullet point notes of useful
information for the project from each article included in
the review. The bullet list can include any information
that either summarizes the article or is useful for the
researcher. As this information is being posted on the
open web, it is recommended that incomplete sentences
be used to record the thoughts while protecting against
self-plagiarism when using the thoughts in writing a new
manuscript as many publishers now use automatic
plagiarism detection software.
FOSS Tool Chain for Literature Reviews
In order to reduce the time and economic
investment needed to do a modern digital literature
review all proprietary (closed source) and costly software
can be avoided. A complete FOSS tool chain can be used
for creating literature reviews in which case the
researchers maintain complete control over their data
Practical Assessment, Research & Evaluation, Vol 23 No 8 Page 6
Pearce, Perform a Literature Review with Free and Open Source Software
and always have access to the software needed to access,
alter or build upon it. This FOSS software has zero
capital costs and is made up of: 1) an operating system,
2) web browser, 3) reference organizer/database, 4)
open access enabler software, 5) text editor/typesetter,
and 6) sharing and collaboration software.
The most popular type of FOSS operating system is
the GNU Linux operating systems (Stallman, 1997),
which support all architectures, are highly reliable and
have a zero cost. There are more than 100 distributions,
with the most popular being Mint, Manjaro, Ubuntu,
Debian, Solus, Elementary, Antergos and Fedora
(Distrowatch, 2018), all of which can be downloaded
and installed for free on existing computers of any type.
Linux distributions generally come with a FOSS
web browser and the most popular is Firefox (Devčić,
2015). Firefox (Mozilla, 2018) has two available plugins,
which are particularly useful for literature reviews. First,
unpaywall (2018) is a Firefox plugin that enables
researcher to click a green tab on the side of the browser
and skip the paywall on millions of peer-reviewed
journal articles. This makes finding accessible copies of
articles much more rapid that searching each database
individually. Unpaywall is fast, free, and legal as it
accesses many of the open access sites that are listed in
Table 1. Second, Zotero (2018) operates as an Android
App (and iPad/iPhone app), desktop program and a
Firefox plugin. It is a free, easy-to-use tool to help
researchers collect, organize, cite, and share research. It
replaces the functionality of proprietary packages such
as RefWorks, Endnote and Papers for zero cost. Thus,
Zotero can auto-add bibliographic information directly
from websites, or publishers pages. In addition, it can
scrape bibliographic data off of pdf files. Notes can be
easily added on each reference. Then finally, it can
import and export the bibliography databases in all of
the publishers’ various formats. Researchers can thus
export bibliographic information to paste into a
document editor for a paper or thesis as well as wiki for
dynamic collaborative literature reviews (discussed in the
next section).
Finally, academic articles can be written
conventionally with the free office suite LibreOffice
(2018), which operates similarly to Microsoft’s Office
products. Zotero has a word processor plugin to
integrate directly with LibreOffice. LibreOffice is more
than adequate for the vast majority of academic paper
writing. In addition, researchers can take the writing of
their papers one step further with LaTeX (2018), a high-
quality typesetting system specifically designed for the
production of technical and scientific documentation.
Zotero libraries can be directly exported to BibTeX files
for use with LaTeX.
Lastly, a wiki can be used to facilitate a dynamic
collaborative literature review. A wiki is a website that
allows anyone to add, delete, or revise content directly
using a web browser. MediaWiki (2018a) is a free
software open source wiki package written in open
source PHP (2018). MediaWiki is available for anyone to
set up their own wikis. Researchers can (in decreasing
order of complexity) 1) set up their own research group
wiki with MediaWiki (2018b), 2) utilize wikis already
established at their universities (e.g. wiki.aalto.fi at Aalto
University in Finland or ist.mit.edu/wikis at MIT in the
U.S.) or 3) use wikis dedicated to areas that they research.
For example, several university research groups that
focus on sustainability research use Appropedia (2018),
which is setup for collaborative solutions in
sustainability, appropriate technology, poverty
reduction, and permaculture. Utilizing a wiki makes it
easy for anyone in the group to keep track of the status
of and update literature reviews both current and from
prior years or researchers. It also easily enables multiple
members of the group to collaborate on the literature
review asynchronously. Most importantly, it also
facilitates others outside of the research group to assist
in making a literature review more complete, accurate
and up-to-date.
Thus, the entire tool chain for literature reviews can
be covered with the FOSS shown in Table 2.
Table 2. Free and open source software useful for
literature reviews
FreeandOpen
Source
Software
DownloadURL
GNULinux
Distributions
https://distrowatch.com/
FireFox https://www.mozilla.org/en‐
US/firefox/new/
Unpaywall https://unpaywall.org/
Zotero https://www.zotero.org/
LibreOffice https://www.libreoffice.org/
LaTeX https://www.latex‐project.org/
MediaWiki https://www.mediawiki.org/wiki/MediaWiki
Practical Assessment, Research & Evaluation, Vol 23 No 8 Page 7
Pearce, Perform a Literature Review with Free and Open Source Software
Encouraging Collaboration With Dynamic Wiki-
Based Literature Reviews
Historically performing a literature review has been
a solitary process, where a single researcher scours
familiar databases and resources to maintain a list of
references and perhaps comments in a single document.
This has some obvious flaws including: i) no individual
is intimately familiar with all of the areas of inquiry that
may pertain to a topic, nor do they have access to all of
the literature, and ii) previously mentioned fracturing of
the literature and inability of any search engine to
comprehensively search the literature easily. An obvious
solution to such problems is to encourage other
researchers to collaborate on relevant literature reviews.
This can be done by using an open source approach by
developing literature reviews on wikis.
Wikis are well known to foster collaboration in
general (Leuf & Cunningham, 2001; McAfee, 2006;
Wagner, 2004) and in education in particular
(Abdekhodaee, et al., 2017; Biasutti, 2017; Cilliers, L.
2017; Cole, 2009; Pearce, 2009; Wang & Turner, 2004).
Wikis are easy to edit with a relatively shallow learning
curve (e.g. a typical research student can master the
basics of wiki markup in under 30 minutes), which
enables new researchers to quickly begin making real
contributions to the effort of the group. In past
experiments using wikis for literature reviews (Pearce,
2012), multiple researchers were able to edit and thus
improve a literature review at the same time or from
different locations (e.g. different labs and offices). The
collaborative advantages to this were useful as
researchers could telecommute (e.g. work from home in
a remote community or while traveling) and thus reduce
commuting time (Denkenberger, et al., 2015) while still
contributing as full members of the group. In addition,
the use of an open edit wiki encourages others to assist
in the research outside of the group. Examples routinely
observed included of assistance from wiki users not
affiliated with the research group: i) giving helpful
comments on group research on the discussion tab of
pages, ii) making grammar and spelling corrections, iii)
adding content to the group’s literature reviews, iv)
adding categories and hyperlinking either to or within
work that are group has made, which adds to the value
and discover-ability of the work (Pearce, 2012). Open
literature reviews arranged in this way are extremely
effective for passing on knowledge to the next
generation of student researchers, keeping up to date on
background research and finding references to read
when writing a paper. However, it should be noted that
publishing a literature review on a wiki does not give
academics (who need peer reviewed articles for tenure)
credit for doing the review. The wiki is merely a means
of facilitating collaboration towards a normally
published review. For example, Figure 1 and 2 shows
several screenshots of a wiki literature review for an
economic review paper on the levelized cost of
electricity of solar cells. Figure 1 shows a typical
literature review page for a wiki. The FOSS wiki software
automatically generates a table of contents when wiki
markup is used. The webpage can be edited by clicking
the “Edit” hyperlink directly in the web browser. Best
practices encourages other researchers to assist with the
literature review. The goals and basic definitions of the
literature review are explained in the beginning and an
entry is made for each article reviewed.
Note that in Figure 2, each reviewed article was
placed in its own level thus both enabling a wiki
generated table of contents for the top of the page, but
also an individual “edit” hyperlink for each entry. The
latter makes it easy for others to add short notes as bullet
points. The entry includes full bibliographic detail along
with a bulleted list of useful information found in the
article. Bullet point summaries avoid self-plagiarism
when writing the full peer-reviewed article.
The wiki example shown in Figures 1 and 2 was
accessed tens of thousands of times directly on the
website and was edited by researchers outside of the
founding pages research group. This improved the
quality of the literature review and it became a major
contribution to the field. According to Google Scholar,
the resultant peer-reviewed article generated from the
literature review has been cited over 800 times. In
addition, this dynamic literature review continues to be
improved so that the next time a researcher needs a
review of the subject it will provide a valuable tool for
extending the work further.
Although using a dedicated group wiki provides
more control over it, using an established wiki to host a
group’s literature reviews has several other advantages.
First, it is easy to get started as creating a free account is
less technically challenging than setting up a wiki on a
researcher-owned or subscription-based server. Second,
using an existing wiki provides immediate exposure to
the existing wiki community as well as high rankings for
search results. For example, as Appropedia is currently
the largest wiki dedicated to appropriate technology and
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Pearce, Perform a Literature Review with Free and Open Source Software
Figure 1. Typical literature review page on a wiki showing the top and table of contents.
Figure 2. An example short entry for an article on a wiki.
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Pearce, Perform a Literature Review with Free and Open Source Software
sustainability, the research group’s that use it benefit
from existing widespread global readership. This
exposure can directly lead to funding opportunities
(Pearce et al., 2012). In addition, to targeted wikis on a
specific research topic, there are also generic open
source research wikis that can provide the needs for
nearly any discipline such as the semantic wiki for the
sciences Open Research (2018).
Benefits to the Open Source Approach
The open source approach to developing literature
reviews shown here has several benefits. First it reduces
investment both in terms of researcher time and
economic costs (both capital and operations). By using a
FOSS tool chain the costs of proprietary software are
eliminated, while at the same time using FOSS ensures
that the literature databases created are not subject to
changes in licensing agreements or discontinuing of
software or support from a proprietary business. The
risk of this occurring can be significant and FOSS
protects researchers from this loss for any reason
including bankruptcy, business decisions, sales or
mergers, or the loss of key technical staff from
proprietary vendors. Researchers can store a copy of the
code themselves (or access it from freely available 3rd
party repositories like GitHub, Bitbucket, Lauchpad,
SourceForge, GitLab, GNU Savannah or OSDN). Thus,
researchers have intellectual property control over the
software used in every stage of their literature review as
well as the database and output and can thus either solve
any future problem with the FOSS themselves or pay
others to do it. Researchers simply do not have these
freedoms with proprietary software. Using, the list of
freely accessible search engines and repositories as well
as legal methods to access the peer-reviewed literature
discussed above can save researchers significant time
while also ensuring a comprehensive review of the
literature. Finally, and perhaps most importantly,
maintaining literature reviews in an open edit wiki
enables others in the field to collaboratively improve
them for both contemporary as well as future scholars.
Overcoming Problems with This Approach
This approach has numerous advantages besides
low costs as discussed above. However, this approach
also comes with challenges. This section will review
challenges for each part of the open source approach
and discuss method to overcome them.
Technical Computer Competency
Not all researchers are comfortable setting up Linux
on their computers because of the technical challenges.
First, it should be pointed out that this has become
significantly easier over the last few years and that most
computer users would be comfortable with the vast
majority of the use of one of the easier distributions like
Ubuntu. Second, most popular Linux distributions come
with a ‘try-before-you-buy’ feature. For example,
Ubuntu can be used from a bootable USB stick (Ubuntu,
2017). The USB stick allows researchers to test run the
Ubuntu desktop experience without interfering in any
way with their PC configuration. If the researcher likes
the experience then the stick can be used to install
Ubuntu on to their machine permanently. Researchers
that previously purchased proprietary software they
need (e.g. a simulation package, graphing package, etc.)
can see if there is an open source alternative, using for
example, osalt.com. If there is not an adequate
alternative then it is possible to run the applications in
Linux using either a remote Windows system, a virtual
machine or Wine (2018). Wine, a recursive acronym for
“Wine Is Not an Emulator”, is a compatibility layer
capable of running Windows applications on Linux.
Even with these options moving to an open source
operating system may be too difficult for some
researchers. For them, a dual boot system that can use
both Linux and Windows is recommended. Finally, it is
not imperative to use Linux in order to be able to take
advantage of the remainder of the software listed in
Table 2. Thus, for example, Firefox and Zotero can be
installed on a Windows machine. Installing and using all
the remainder of the software is straightforward and
researchers can get the help of their organization’s IT
staff for assistance. Because all of the software listed in
Table 2 is zero cost, it should not represent a significant
barrier for IT to install it on all of the computers at a
university, nonprofit or company.
One Stop for Comprehensive Search and Access
Although the free (zero cost) academic search engines
for published papers and preprints social networks have
expanded significantly (Table 1), there is still a need for
a one stop location for comprehensive academic article
searching and open access finding. Håklev (2013) has
argued that there is still a need for an open alternative to
Google Scholar, although this does not preclude the
current use of the many databases in Table 1. Future
work is needed to reduce the time expenditure to utilize
all of these resources.
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Pearce, Perform a Literature Review with Free and Open Source Software
Vandalism
A common fear among researchers about putting their
work on an open wiki that anyone can edit is that it
would be vandalized either maliciously or simply
corrupted by well-intentioned users that alter their
writing. Fortunately, there are several ways around this
potential problem. First spam and actual vandalism on
the major wikis, are normally removed by the vigilant
team of administrators for the wiki without any effort
from researchers. For smaller wikis (e.g. a research
group’s own wiki with only modest internet traffic) this
is less of a problem because there is less of an incentive
for bot-based advertising-funded spamming that makes
up the vast majority of vandalism. Thus, small wikis can
be passively defended. Researchers can add their
literature review pages to their watchlists so that they can
choose to be notified if it is edited by someone other
than themselves. Vandalism can be easily removed with
1 or 2 clicks of “undo” from the standard revision “view
history” menu of any Wikimedia-based page.
Critical Mass for Collaboration on Literature
Reviews
To have the free user to user assistance seen in the
success of FOSS (Lakhani & Von Hippel, 2003) there
must be a critical mass of users. Thus, the primary
challenge with the wiki collaboration approach is there
must be a critical mass or other researchers external to a
lab that use the same approach (e.g. are willing to
contribute to a shared literature review) to obtain the full
list of benefits. In a vibrant and well-populated open
research community, which has reached critical mass on
any research topic, maintaining a literature review would
become a community affair and not the primary work of
a single group. If the majority of researchers simply
added their own work in order to garner more attention
to it, this approach would be significantly improved.
Future work is needed to determine the most effective
methods for encouraging an entire research community
to adopt the open source approach.
Conclusions
This paper has shown best practices for using a tool
chain of free and open source software and methods to
perform literature reviews. Resources for
comprehensive searching and obtaining access to the
literature were provided that enable researchers from
underfunded labs and countries with low-levels of
scientific financing to participate in the scientific
enterprise. Free and open source software, was provided
for all steps including browsing, bibliographic software,
and writing. Finally, a clear framework was provided for
documenting a literature review to encourage
collaboration of a dynamic document that lives into the
future for the benefit of all researchers in a given field.
This approach was shown how to solve the current
challenges of literature reviews in general and reduce
time expenditures and costs. Finally, the challenges of
using this approach are discussed and either overcome
with existing methods or future work is provided. It is
concluded, that although there are many types and goals
of literature reviews, all of them can be improved using
a tool chain of free and open source software and
methods.
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Citation:
Pearce, Joshua M. (2018). How to Perform a Literature Review with Free and Open Source Software. Practical
Assessment, Research & Evaluation, 23(9). Available online: http://pareonline.net/getvn.asp?v=23&n=8
Acknowledgment
This work was supported by Fulbright Finland.
Corresponding Author
Joshua M. Pearce, Professor
Department of Electronics & Nanoengineering, Aalto University, P.O. Box 13500, FI-00076 AALTO, Finland
Department of Materials Science & Engineering and Department of Electrical & Computer Engineering,
Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295
email: pearce [at] mtu.edu