@article{ref1,
title="Aggressive behavior, mental sub-normality and the XYY male",
journal="Nature",
year="1965",
author="Jacobs, P. A. and Brunton, M. and Melville, M. M. and Brittain, R. P. and McClemont, W. F.",
volume="208",
number="5017",
pages="1351-1352",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-0836",
doi="",
url="http://dx.doi.org/"
}