@article{ref1,
title="Graduated licensing comes to the United States",
journal="Injury prevention",
year="1999",
author="Williams, Allan F.",
volume="5",
number="2",
pages="133-135",
abstract="OBJECTIVE: To describe the young driver problem and the emergence of graduated licensing as a way to address it. METHODS: Literature review and commentary. RESULTS: Twenty-four states in the United States adopted versions of graduated licensing in 1996-98; initial results show positive effects. CONCLUSIONS: A major public health movement is under way that can be expected to produce significant reductions in crashes and injuries involving young drivers.",
language="en",
issn="1353-8047",
doi="",
url="http://dx.doi.org/"
}