@article{ref1,
title="Frequency of ski injuries in the Davos region",
journal="Orthopedic clinics of North America",
year="1976",
author="Matter, P. and Muller, W. and Ott, C.",
volume="7",
number="1",
pages="31-35",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0030-5898",
doi="",
url="http://dx.doi.org/"
}