@article{ref1,
title="Distance and depth diving",
journal="Deutsche Medizinische Wochenschrift",
year="1973",
author="Klausen, H.",
volume="98",
number="12",
pages="634-635",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0012-0472",
doi="",
url="http://dx.doi.org/"
}