@article{ref1,
title="Rise and fall of the Y chromosome",
journal="Science",
year="1994",
author="Morell, V.",
volume="263",
number="5144",
pages="171-172",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0036-8075",
doi="",
url="http://dx.doi.org/"
}