This article proposes the use of a qualitative content analysis, a non-legal research method, in combination with doctrinal research. Qualitative content analysis is close to doctrinal research, yet it consists of a more systematic methodology with set rules for the selection, coding and analysis of the legal texts. Therefore, it is suitable for descriptive legal research that deals with a high number of legal documents, such as case law. In this article, the qualitative content analysis will be introduced, with special attention to its methodology, its relation to traditional doctrinal research and its strengths and weaknesses. In addition, the methodology will be discussed in relation to my own PhD research; a systematic analysis of the development and interpretation of collective reparations in different international, regional and national courts and commissions that deal with gross human rights and serious humanitarian law violations.