Horace A. DeFord

Characteristics of drug abusers that discriminate needle-sharers.

Michael P. Dolan, John L. Black, Horace A. DeFord et al. · PubMed · 1987 · 45 citations

Family Medicine, Substance Use, Drug Policy +16

Contracting for treatment termination to reduce illicit drug use among methadone maintenance treatment failures.

Michael P. Dolan, John L. Black, Walter E. Penk et al. · Journal of Consulting and Clinical Psychology · 1985 · 41 citations

Substance Abuse, Substance Use, Health Policy +13

The effect of increased cocaine use on drug treatment

John L. Black, Michael P. Dolan, Walter E. Penk et al. · Addictive Behaviors · 1987 · 36 citations

Substance Abuse, Substance Use, Addiction Treatment +8

Predicting the outcome of contingency contracting for drug abuse

Michael P. Dolan, John L. Black, Walter E. Penk et al. · Behavior Therapy · 1986 · 27 citations

Substance Abuse, Substance Use, Addiction +4