@article{ref1,
title="Observations concerning sports",
journal="Tijdschrift voor Sociale Geneeskunde",
year="1964",
author="Strijbos, C. P.",
volume="42",
number="",
pages="956-959",
abstract="<p>[Abstract unavailable]</p><p>Language: nl</p>",
language="nl",
issn="0040-7607",
doi="",
url="http://dx.doi.org/"
}