@article{ref1,
title="Injection drug users, crack smokers, and the use of human services",
journal="Social work research",
year="1995",
author="Falck, Russel S. and Ashery, R. S. and Carlson, R. G. and Wang, Jiangping and Siegal, H. A.",
volume="19",
number="3",
pages="164-173",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1070-5309",
doi="",
url="http://dx.doi.org/"
}