@article{ref1,
title="The changing sex ratio of the navajo tribe",
journal="Social biology",
year="1976",
author="Kunitz, S. J. and Slocumb, J. C.",
volume="23",
number="1",
pages="33-44",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0037-766X",
doi="",
url="http://dx.doi.org/"
}