@article {VokRenTanParWaa2004,
	title = {Visual Kin Recognition and Family Resemblance in Chimpanzees \emph(Pan troglodytes).},
	journal = {Journal of Comparative Psychology},
	volume = {118},
	number = {2},
	year = {2004},
	pages = {194},
	publisher = {American Psychological Association},
	author = {Vokey, John R and Rendall, Drew and Tangen, Jason M and Parr, Lisa A and de Waal, Frans}
}
