@article{ref1,
title="Frostbite of the human face as a selective force",
journal="Human biology; an international record of research",
year="1967",
author="Steegmann, A. T. Jr",
volume="39",
number="2",
pages="131-144",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7143",
doi="",
url="http://dx.doi.org/"
}