@article{ref1,
title="The effectiveness of a new touch football helmet to reduce head injuries",
journal="Journal of school health",
year="1970",
author="Kraus, Jess Frank and Anderson, Bruce D. and Mueller, C. E.",
volume="40",
number="9",
pages="496-500",
abstract="Abstract unavailable.",
language="",
issn="0022-4391",
doi="",
url="http://dx.doi.org/"
}