%0 Journal Article
%A Péle, Marie
%A Dufour, Valérie
%A Thierry, Bernard
%A Call, Josep
%+ Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society
%T Token transfers among great apes (Gorilla gorilla, Pongo pygmaeus, Pan paniscus, and Pan troglodytes): Species differences, gestural requests, and reciprocal exchange : 
%G eng
%U https://hdl.handle.net/11858/00-001M-0000-000F-F9A1-A
%F EDOC: 442305
%R 10.1037/a0017253
%D 2009
%J Journal of Comparative Psychology
%V 123
%N 4
%& 375
%P 375 - 384