@article{ref1,
title="Study of marihuana effects",
journal="Minerva medica",
year="1971",
author="",
volume="62",
number="40 Suppl",
pages="13-14",
abstract="<p>[Abstract unavailable]   Keywords: Cannabis impaired driving </p> <p>Language: it</p>",
language="it",
issn="0026-4806",
doi="",
url="http://dx.doi.org/"
}