@article{ref1,
title="Letter: The study of the inheritance of rare behaviors: The cohort technique",
journal="Behavior genetics",
year="1973",
author="Lester, David",
volume="3",
number="2",
pages="197-198",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0001-8244",
doi="",
url="http://dx.doi.org/"
}