@article{ref1,
title="The effectiveness of a special ice hockey helmet to reduce head injuries in college intramural hockey",
journal="Medicine and science in sports",
year="1970",
author="Kraus, Jess Frank and Anderson, Bruce D. and Mueller, C. E.",
volume="2",
number="3",
pages="162-164",
abstract="Abstract unavailable.",
language="",
issn="0025-7990",
doi="",
url="http://dx.doi.org/"
}