@article{ref1,
title="A computer's analysis of football injuries",
journal="Journal of sports medicine",
year="1975",
author="Johnson, J. C. and Ritter, M. A.",
volume="3",
number="4",
pages="168-171",
abstract="<p>[Abstract unavailable]  Keywords: American football </p> <p>Language: en</p>",
language="en",
issn="0090-4201",
doi="",
url="http://dx.doi.org/"
}