@article{ref1,
title="Cranial injury and fitness",
journal="Belgisch Tijdschrift voor Geneeskunde",
year="1953",
author="Thijs, J.",
volume="9",
number="13",
pages="573-587",
abstract="<p>[Abstract unavailable]</p><p>Language: un</p>",
language="un",
issn="0366-368X",
doi="",
url="http://dx.doi.org/"
}