@article{ref1,
title="Causes of injuries during the practical classes on physical education in schools",
journal="Journal of sports medicine and physical fitness",
year="1973",
author="Medved, R. and Pavisic-Medved, V.",
volume="13",
number="1",
pages="32-41",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-4707",
doi="",
url="http://dx.doi.org/"
}