@article {309969,
	title = {Development of social cognition in infant chimpanzees (Pan troglodytes): Face recognition, smiling, gaze, and the lack of triadic interactions},
	journal = {Japanese Psychological Research},
	volume = {46},
	year = {2004},
	pages = {227{\textendash}235},
	author = {Masaki Tomonaga and Masayuki Tanaka and Tetsuro Matsuzawa and Masako Myowa-Yamakoshi and Daisuke Kosugi and Yuu Mizuno and Sanae Okamoto and Masami K Yamaguchi and Kim A Bard}
}
