@article{ref1,
title="The relationship between alcohol and marijuana use and competence in adolescence",
journal="Journal of health and social policy",
year="1990",
author="Pandina, R. J. and Labouvie, E. W. and Johnson, V. and White, H. R.",
volume="1",
number="3",
pages="89-108",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0897-7186",
doi="10.1300/J045v01n03_06",
url="http://dx.doi.org/10.1300/J045v01n03_06"
}