@article{ref1,
title="The heart and blood circulation in athletes",
journal="Medizinische Welt",
year="1960",
author="Reindell, H. and Roskamm, H. and Steim, H.",
volume="31",
number="",
pages="1557-1563",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0025-8512",
doi="",
url="http://dx.doi.org/"
}