% pubman genre = article @article{item_1553032, title = {{Wild chimpanzees exchange meat for sex on a long-term basis}}, author = {Gomes, Cristina M. and Boesch, Christophe}, language = {eng}, issn = {1932-6203}, doi = {10.1371/journal.pone.0005116}, publisher = {Public Library of Science}, address = {San Francisco, CA}, year = {2009}, journal = {{PLoS One}}, volume = {4}, number = {4}, eid = {e5116}, }