@article{ref1,
title="A Clinical Study of Twenty-Six Pairs of Twins",
journal="Psychol Clin",
year="1933",
author="White, Kenneth B.",
volume="21",
number="4",
pages="243-252",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="",
doi="",
url="http://dx.doi.org/"
}