Ethnic Power Relations (EPR)
My work draws heavily on the Ethnic Power Relations (EPR) dataset, which I have managed over the past nine years. The EPR dataset provides annual data on politically relevant ethnic groups, their relative sizes as a share of the total population, and their access to state power in all countries of the world with a population, in 1990, of at least 500,000, and where ethnicity has been politicized.
When using the updated EPR 2018 dataset, please cite the following publication:
Vogt, Manuel, Nils-Christian Bormann, Seraina Rüegger, Lars-Erik Cederman, Philipp Hunziker, and Luc Girardin. 2015. "Integrating Data on Ethnicity, Geography, and Conflict: The Ethnic Power Relations Data Set Family." Journal of Conflict Resolution 59(7):1327-1342. (Link to article)
When referring to the original EPR version 1.1., please cite:
Cederman, Lars-Erik, Andreas Wimmer, and Brian Min. 2010. "Why Do Ethnic Groups Rebel? New Data and Analysis." World Politics 62(1):87-119.