This paper is in the following e-collection/theme issue:

Web-based and Mobile Health Interventions 

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Works citing "Web-Based Cognitive Behavioral Self-Help Intervention to Reduce Cocaine Consumption in Problematic Cocaine Users: Randomized Controlled Trial"

Michael Schaub, Robin Sullivan, Severin Haug, Lars Stark
J Med Internet Res 2012 (Nov 28); 14(6):e166 

According to Crossref, the following articles are citing this article (DOI 10.2196/jmir.2244):

(note that this is only a small subset of citations)

1. Neale J, Stevenson C. The use of computer-assisted therapy by homeless drug users living in hostels: An explorative qualitative study. Drugs: Education, Prevention, and Policy 2014;21(1):80 [CrossRef]
2. Schaub MP, Haug S, Wenger A, Berg O, Sullivan R, Beck T, Stark L. Can reduce - the effects of chat-counseling and web-based self-help, web-based self-help alone and a waiting list control program on cannabis use in problematic cannabis users: a randomized controlled trial. BMC Psychiatry 2013;13(1):305 [CrossRef]