% pubman genre = article @article{item_1555727, title = {{Tufted capuchins (Cebus apella) attribute value to foods and tools during voluntary exchanges with humans}}, author = {Westergaard, G. C. and Liv, C. and Rocca, A. R. and Cleveland, Allison and Suomi, S. J.}, language = {eng}, year = {2004}, date = {2004}, journal = {{Animal Cognition}}, volume = {7}, number = {1}, pages = {19--24}, }