Holtyn, A. F., Koffarnus, M. N., DeFulio, A., Sigurdsson, S. O., Strain, E. C., Schwartz, R. P., & Silverman, K. (2014). EMPLOYMENT-BASED ABSTINENCE REINFORCEMENT PROMOTES OPIATE AND COCAINE ABSTINENCE IN OUT-OF-TREATMENT INJECTION DRUG USERS. J Appl Behav Anal.

Holtyn, August F., Mikhail N. Koffarnus, Anthony DeFulio, Sigurdur O. Sigurdsson, Eric C. Strain, Robert P. Schwartz, a Kenneth Silverman. "EMPLOYMENT-BASED ABSTINENCE REINFORCEMENT PROMOTES OPIATE AND COCAINE ABSTINENCE IN OUT-OF-TREATMENT INJECTION DRUG USERS." J Appl Behav Anal 2014.

Holtyn, August F., et al. "EMPLOYMENT-BASED ABSTINENCE REINFORCEMENT PROMOTES OPIATE AND COCAINE ABSTINENCE IN OUT-OF-TREATMENT INJECTION DRUG USERS." J Appl Behav Anal 2014.