@article{ref1,
title="Differences among AA groups: implications for research",
journal="Journal of studies on alcohol",
year="1993",
author="Montgomery, H. A. and Miller, William R. and Tonigan, J. S.",
volume="54",
number="4",
pages="502-504",
abstract="Clinical writings and research often imply the homogeneity of Alcoholics Anonymous. Survey data from four groups reflected some consistencies as well as substantial variation in group environment that could have an important impact on outcomes and research.<p /><p>Language: en</p>",
language="en",
issn="0096-882X",
doi="",
url="http://dx.doi.org/"
}