@article{ref1,
title="Long-term ECG studies on the problem of heart loading during descent in skiing in the elderly",
journal="Medizinische Welt",
year="1970",
author="Phlippen, R. and Heck, H. and Grünewald, B.",
volume="46",
number="",
pages="1985-1990",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0025-8512",
doi="",
url="http://dx.doi.org/"
}