@article{ref1,
title="An Instance of Effective Legal Regulation: Motorcyclist Helmet and Daytime Headlamp Laws",
journal="Law and society review",
year="1976",
author="Robertson, Leon S.",
volume="10",
number="3",
pages="467-477",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0023-9216",
doi="10.2307/3053144",
url="http://dx.doi.org/10.2307/3053144"
}