Wucherpfennig, Julian, Nils B. Weidmann, Luc Girardin, Lars-Erik Cederman, and Andreas Wimmer. “Politically Relevant Ethnic Groups across Space and Time: Introducing the GeoEPR Dataset <sup/>.” Conflict Management and Peace Science 28, no. 5 (2011): 423–37. https://doi.org/10.1177/0738894210393217.
