@article{ref1,
title="Cycling offers important health benefits and should be encouraged",
journal="British medical journal: BMJ",
year="1997",
author="Hillman, M.",
volume="315",
number="7106",
pages="490-490",
abstract="Abstract unavailable.",
language="",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}