@article{ref1,
title="Football's big brainteaser. A new high-tech helmet is helping researchers pinpoint which hits cause head injuries",
journal="Time",
year="2007",
author="Rawe, Julie",
volume="170",
number="12",
pages="58-58",
abstract="<p>[Abstract unavailable]  Keywords: American football </p> <p>Language: en</p>",
language="en",
issn="0040-781X",
doi="",
url="http://dx.doi.org/"
}