@article{ref1,
title="Significance of injuries to hip joints changed due to prearthrosis and arthrosis",
journal="Hefte zur Unfallheilkunde",
year="1975",
author="Pick, C. and Buck, F. and Koob, E.",
volume="",
number="121",
pages="268-270",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0085-1469",
doi="",
url="http://dx.doi.org/"
}