@article {309854, title = {Teaching among wild chimpanzees}, journal = {Animal Behaviour}, volume = {41}, year = {1991}, pages = {530 - 532}, issn = {0003-3472}, doi = {http://dx.doi.org/10.1016/S0003-3472(05)80857-7}, url = {http://www.sciencedirect.com/science/article/pii/S0003347205808577}, author = {Chiristophe Boesch} }