% pubman genre = article
@article{item_1554806,
title = {{Chimpanzees are vengeful but not spiteful}},
author = {Jensen, Keith and Call, Josep and Tomasello, Michael},
language = {eng},
doi = {10.1073/pnas.0705555104},
year = {2007},
date = {2007},
journal = {{Proceedings of the National Academy of Sciences of the United States of America (PNAS)}},
volume = {104},
number = {32},
pages = {12971--12975},
}