Lasse Cronqvist has published Qualitative Comparative Analysis (QCA). Eine Einführung mit TOSMANA und dem QCA Add-In (Rainer Hampp Verlag 2019). The textbook is aimed at readers with no previous knowledge of QCA and presents the basics of the methodology in a compact form. The descriptions are mainly application-oriented and combines the description of QCA with the application with TOSMANA and the QCA Add-in for Excel.