@article{ref1,
title="Sports in pregnancy",
journal="Archives of gynecology and obstetrics",
year="1987",
author="Huch, R.",
volume="241",
number="Suppl",
pages="S20-8",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0932-0067",
doi="",
url="http://dx.doi.org/"
}