@article{ref1,
title="20 Years of winter sports and safety",
journal="Zeitschrift fur Unfallchirurgie und Versicherungsmedizin",
year="1993",
author="",
volume="86",
number="Suppl 1",
pages="7-287",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="1017-1584",
doi="",
url="http://dx.doi.org/"
}