@article{ref1,
title="Orthopedic problems of sports for adolescents",
journal="Deutsches Medizinisches Journal",
year="1964",
author="Friedebold, G.",
volume="15",
number="",
pages="173-178",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0012-1320",
doi="",
url="http://dx.doi.org/"
}