@article{ref1,
title="Graduated driver licensing systems: reducing crashes among teenage drivers",
journal="JAMA journal of the American Medical Association",
year="2001",
author="McCartt, Anne Taylor",
volume="286",
number="13",
pages="1631-1632",
abstract="Abstract unavailable.",
language="",
issn="0098-7484",
doi="",
url="http://dx.doi.org/"
}