@article{ref1,
title="Phonocardiographic findings in skiers",
journal="Casopis Lekaru Ceskych",
year="1951",
author="Neuman, J. and Zoulek, D.",
volume="90",
number="24",
pages="719-720",
abstract="<p>[Abstract unavailable]</p> <p>Language: un</p>",
language="un",
issn="0008-7335",
doi="",
url="http://dx.doi.org/"
}