@article{ref1,
title="Sports and health",
journal="Sozial und Praventivmedizin",
year="1976",
author="Howald, H.",
volume="21",
number="6",
pages="241-244",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0303-8408",
doi="",
url="http://dx.doi.org/"
}