@article{ref1,
title="Medical problems of future mass-air-traffic",
journal="Munchener Medizinische Wochenschrift",
year="1971",
author="Wissfeld, H. J.",
volume="113",
number="10",
pages="Suppl 3:37-9",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0027-2973",
doi="",
url="http://dx.doi.org/"
}