@article{ref1,
title="Marijuana use in high school students",
journal="Diseases of the nervous system",
year="1972",
author="Blumenfield, M. and Riester, A. E. and Serrano, A. C. and Adams, R. L.",
volume="33",
number="9",
pages="603-610",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0012-3714",
doi="",
url="http://dx.doi.org/"
}