@article{ref1,
title="The ascent of man",
journal="Biology and human affairs",
year="1950",
author="Whittingham, P. D. G.",
volume="15",
number="3",
pages="123-128",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0006-3355",
doi="",
url="http://dx.doi.org/"
}