% pubman genre = article @article{item_1553012, title = {{Complex tool sets for honey extraction among chimpanzees in Loango National Park, Gabon}}, author = {Boesch, Christophe and Head, Josephine and Robbins, Martha M.}, language = {eng}, doi = {10.1016/j.jhevol.2009.04.001}, year = {2009}, date = {2009}, journal = {{Journal of Human Evolution}}, volume = {56}, number = {6}, pages = {560--569}, }