@article{ref1,
title="Decreasing number of skiing accidents in the Swedish mountains",
journal="Lakartidningen",
year="1991",
author="Lindén, B. and Berg, R. and Balkfors, B. and Engkvist, O.",
volume="88",
number="5",
pages="308-309",
abstract="<p>[Abstract unavailable]</p><p>Language: sv</p>",
language="sv",
issn="0023-7205",
doi="",
url="http://dx.doi.org/"
}