@article{ref1,
title="All-terrain vehicles",
journal="Journal of bone and joint surgery: American volume",
year="1988",
author="Cowell, H. R.",
volume="70",
number="2",
pages="159-159",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0021-9355",
doi="",
url="http://dx.doi.org/"
}