@article{ref1,
title="Why child cyclists should wear helmets",
journal="Practitioner",
year="1986",
author="Clarke, A. J. and Sibert, Jonathan Richard",
volume="230",
number="1416",
pages="513-514",
abstract="Abstract unavailable.",
language="",
issn="0032-6518",
doi="",
url="http://dx.doi.org/"
}