@article{ref1,
title="Comparison of youthful heroin users and nonusers from one urban community",
journal="International journal of the addictions",
year="1975",
author="Craig, S. R. and Brown, B. S.",
volume="10",
number="1",
pages="53-64",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-773X",
doi="",
url="http://dx.doi.org/"
}