@article{ref1,
title="Cannabis. Biological and pharmacological effect, analytical methods and car driving",
journal="Tidsskrift for den Norske Laegeforening",
year="1980",
author="Karlsen, R. L. and Bugge, A. and Wedege, E. and Svenneby, G. and Kvamme, E.",
volume="100",
number="12",
pages="680-1, 695",
abstract="unavailable]  Keywords: Cannabis impaired driving",
language="",
issn="0029-2001",
doi="",
url="http://dx.doi.org/"
}