@article{ref1,
title="The Progress from Brute to Man",
journal="North American review",
year="1873",
author="Fiske, John",
volume="117",
number="241",
pages="251-319",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0029-2397",
doi="",
url="http://dx.doi.org/"
}