@article{ref1,
title="Injuries in football",
journal="Journal of sports medicine and physical fitness",
year="1963",
author="Hinrichsen, K.",
volume="3",
number="",
pages="31-36",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0022-4707",
doi="",
url="http://dx.doi.org/"
}