% pubman genre = article
@article{item_1554175,
title = {{Token transfers among great apes (Gorilla gorilla, Pongo pygmaeus, Pan paniscus, and Pan troglodytes): Species differences, gestural requests, and reciprocal exchange}},
author = {P{\'e}le, Marie and Dufour, Val{\'e}rie and Thierry, Bernard and Call, Josep},
language = {eng},
doi = {10.1037/a0017253},
year = {2009},
date = {2009},
journal = {{Journal of Comparative Psychology}},
volume = {123},
number = {4},
pages = {375--384},
}