% pubman genre = article
@article{item_1553099,
title = {{Independent evolution of knuckle-walking in African apes shows that humans did not evolve from a knuckle-walking ancestor}},
author = {Kivell, Tracy L. and Schmitt, Daniel},
language = {eng},
doi = {10.1073/pnas.0901280106},
year = {2009},
date = {2009},
journal = {{PNAS}},
volume = {106},
number = {34},
pages = {14241--14246},
}