@article{ref1,
title="Views of Parents of Teenagers About Graduated Licensing Systems",
journal="Journal of safety research",
year="1998",
author="Williams, Allan F. and Ferguson, Susan A. and Leaf, William A. and Preusser, David F.",
volume="29",
number="1",
pages="1-7",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0022-4375",
doi="",
url="http://dx.doi.org/"
}