@article{ref1,
title="Head Injuries and Concussions in Soccer",
journal="Clinical journal of sport medicine",
year="2005",
author="Delaney, J. Scott and Frankovich, Renata",
volume="15",
number="4",
pages="214-215",
abstract="Abstract unavailable.",
language="",
issn="1050-642X",
doi="",
url="http://dx.doi.org/"
}