@article{ref1,
title="Drugs and driving: a need for precision and symmetry in the formulation of offense definitions",
journal="Proceedings International Council on Alcohol, Drugs and Traffic Safety Conference",
year="1987",
author="Hammer, T.j.",
volume="1987",
number="",
pages="591-599",
abstract="No abstract provided.<p />",
language="",
issn="",
doi="",
url="http://dx.doi.org/"
}