@article{ref1,
title="National Highway Traffic Safety Administration(NHTSA) Notes. Graduated driver licensing systems",
journal="Annals of emergency medicine",
year="2005",
author="McKay, Mary Pat",
volume="45",
number="6",
pages="639-642",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0196-0644",
doi="10.1016/j.annemergmed.2005.03.004",
url="http://dx.doi.org/10.1016/j.annemergmed.2005.03.004"
}