@article{ref1,
title="The quality of officiating as an injury prevention factor in intramural touch football",
journal="Medicine and science in sports",
year="1971",
author="Kraus, Jess Frank and Anderson, Bruce D. and Mueller, C. E.",
volume="3",
number="3",
pages="143-147",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0025-7990",
doi="",
url="http://dx.doi.org/"
}