@article{ref1,
title="Sports and the aged",
journal="Deutsche Gesundheitswesen",
year="1952",
author="Boehmig, A.",
volume="7",
number="17",
pages="542-545",
abstract="<p>[Abstract unavailable]</p> <p>Language: un</p>",
language="un",
issn="0012-0219",
doi="",
url="http://dx.doi.org/"
}