@article{ref1,
title="Common injuries in connection with conditioning exercises",
journal="Scandinavian journal of rehabilitation medicine",
year="1971",
author="Liljedahl, S. O.",
volume="3",
number="1",
pages="1-5",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0036-5505",
doi="",
url="http://dx.doi.org/"
}