@article{ref1,
title="Twin studies in sport and physical performance",
journal="Acta geneticae medicae et gemellologiae",
year="1970",
author="Venerando, A. and Milani-Comparetti, M.",
volume="19",
number="1",
pages="80-82",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-5660",
doi="",
url="http://dx.doi.org/"
}