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2014
Blevins CE, Stephens RS, Walker DD, Roffman RA.  2014.  Situational determinants of use and treatment outcomes in marijuana dependent adults.. Addict Behav. 39(3):546-52.
2011
Walker DD, Neighbors C, Rodriguez LM, Stephens RS, Roffman RA.  2011.  Social norms and self-efficacy among heavy using adolescent marijuana smokers.. Psychol Addict Behav. 25(4):727-32.