@article{ref1,
title="Teenage Driver Licensure Rates in Four States",
journal="Journal of safety research",
year="1998",
author="Farmer, Charles M. and Leaf, William A. and Williams, Allan F. and Ferguson, Susan A. and Preusser, David F.",
volume="29",
number="2",
pages="97-105",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0022-4375",
doi="",
url="http://dx.doi.org/"
}