@article{ref1,
title="Evidence shows that cyclists should wear helmets",
journal="British medical journal: BMJ",
year="1996",
author="Davis, R. M. and Pless, Ivan Barry",
volume="313",
number="7057",
pages="629-629",
abstract="Abstract unavailable.",
language="",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}