@article{ref1,
title="Graduated driver licensing evaluation results from early programs in the United States",
journal="Annual proceedings of the Association for the Advancement of Automotive Medicine",
year="2003",
author="Shope, Jean T. and Molnar, Lisa J.",
volume="47",
number="",
pages="536-538",
abstract="Abstract unavailable.",
language="",
issn="1540-0360",
doi="",
url="http://dx.doi.org/"
}