@article{ref1,
title="Altitude and skiing",
journal="Journal of the Maine Medical Association",
year="1971",
author="Stiles, M. H.",
volume="62",
number="6",
pages="139-141",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0025-0694",
doi="",
url="http://dx.doi.org/"
}