@article{ref1,
title="Problems of gymnastics and sports",
journal="Maanedsskrift for praktisk laegegerning og social medicin",
year="1953",
author="Hansen, E.",
volume="31",
number="2",
pages="41-65",
abstract="<p>[Abstract unavailable]</p><p>Language: da</p>",
language="da",
issn="0373-2746",
doi="",
url="http://dx.doi.org/"
}