@article{ref1,
title="Power take-off injuries",
journal="Journal of trauma",
year="1973",
author="Bryan, R. S. and McElfresh, E. C.",
volume="13",
number="9",
pages="775-782",
abstract="Abstract unavailable.",
language="",
issn="0022-5282",
doi="",
url="http://dx.doi.org/"
}