@article{ref1,
title="Clay shovelers' injuries. A report of two injuries sustained from football",
journal="American journal of sports medicine",
year="1987",
author="Nuber, G. W. and Schafer, M. F.",
volume="15",
number="2",
pages="182-183",
abstract="<p>[Abstract unavailable]  Keywords: American football </p> <p>Language: en</p>",
language="en",
issn="0363-5465",
doi="",
url="http://dx.doi.org/"
}