@article{ref1,
title="Heart rate and mental stretch in gliding",
journal="Medizinische Welt",
year="1971",
author="Clasing, D. and Vogler, G. and Burchardt, W. and Klaus, E. J.",
volume="19",
number="",
pages="808-811",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0025-8512",
doi="",
url="http://dx.doi.org/"
}