@article{ref1,
title="Cognitive and personality differences between identical twins following skull fractures",
journal="Journal of pediatric psychology",
year="1984",
author="Lyons, Michael J. and Matheny, A. P.",
volume="9",
number="4",
pages="485-494",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0146-8693",
doi="",
url="http://dx.doi.org/"
}