@article{ref1,
title="Comments of a sports physician on fatal accidents in military and sport exercises and competitions",
journal="Vierteljahrsschrift für Schweizerische Sanitätsoffiziere",
year="1952",
author="Heyden, W.",
volume="29",
number="4",
pages="220-227",
abstract="<p>[Abstract unavailable]</p><p>Language: un</p>",
language="un",
issn="1420-7133",
doi="",
url="http://dx.doi.org/"
}