@article{ref1,
title="Promoting helmet use in recreational sports",
journal="Journal of Pediatric Health Care",
year="1994",
author="Swartz, M. K.",
volume="8",
number="3",
pages="138-139",
abstract="Abstract unavailable.",
language="",
issn="0891-5245",
doi="",
url="http://dx.doi.org/"
}