@article{ref1,
title="Traumatic, subcutaneous, simultaneous rupture of both knee ligaments",
journal="Zentralblatt fur Chirurgie",
year="1974",
author="Lugger, L. J.",
volume="99",
number="27",
pages="850-852",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-409X",
doi="",
url="http://dx.doi.org/"
}