@article{ref1,
title="Why is sport in the modern industrial society necessary for mental hygiene?",
journal="Schweizerische Zeitschrift fur Sportmedizin",
year="1976",
author="Hegg, J. J.",
volume="24",
number="2",
pages="161-169",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0036-7885",
doi="",
url="http://dx.doi.org/"
}