Van Leeuwen, Edwin J. C. Language and Cognition Department, MPI for Psycholinguistics, Max Planck Society; University of St Andrews, School of Psychology & Neuroscience;
http://www.nature.com/articles/srep44091 (Supplementary material)
VanLeeuwen_Cronin_Haun_2017.pdf (Publisher version), 602KB
Van Leeuwen, E. J. C., Cronin, K. A., & Haun, D. B. M. (2017). Tool use for corpse cleaning in chimpanzees. Scientific Reports, 7: 44091. doi:10.1038/srep44091.