Female parity, male aggression, and the Challenge Hypothesis in wild chimpanzeesDOI: info:10.1007/s10329-012-0332-4v. 54No. 1Springer81–88
Sobolewski, Marissa E., Brown, Janine L., and Mitani, John C. 2012. "Female parity, male aggression, and the Challenge Hypothesis in wild chimpanzees." Primates, 54, (1) 81–88. https://doi.org/10.1007/s10329-012-0332-4.