@article{ref1,
title="Response to Rissel and Wen: 'The possible effect on frequency of cycling if mandatory bicycle helmet legislation was repealed in Sydney, Australia: a cross sectional survey'",
journal="Health promotion journal of Australia",
year="2012",
author="Olivier, Jake and Churches, Tim and Walter, Scott and McIntosh, Andrew and Grzebieta, Raphael H.",
volume="23",
number="1",
pages="76-76",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1036-1073",
doi="",
url="http://dx.doi.org/"
}