@article{ref1,
title="Easy rider--hard facts: motorcycle helmet laws",
journal="New England journal of medicine",
year="1978",
author="Russo, P. K.",
volume="299",
number="19",
pages="1074-1076",
abstract="Abstract unavailable.",
language="",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}