R. F. Calkins

Computed tomography in the evaluation, staging, and therapy of carcinoma of the bladder and prostate.

C. Morgan, R. F. Calkins, E. Cavalcanti, 1981, Radiology.

SUBSTANCE USE, NEED, AND DEMAND FOR SUBSTANCE USER TREATMENT SERVICES IN PATIENTS TREATED FOR SEXUALLY TRANSMITTED DISEASES IN MICHIGAN

David Johnson, G. B. Aktan, R. F. Calkins, 2001, Substance use & misuse.

Test-retest reliability of psychoactive substance abuse and dependence diagnoses in telephone interviews using a modified Diagnostic Interview Schedule-Substance Abuse Module.

K. Ribisl, R. Kasim, G. B. Aktan, 1997, The American journal of drug and alcohol abuse.

Estimation of Heroin Prevalence in Michigan Using Capture-Recapture and Heroin Problem Index Methods

G. B. Aktan, R. F. Calkins, 2000 .

Methcathinone: the next illicit stimulant epidemic?

R. F. Calkins, Georgia B. Aktan, Kathryn L. Hussain, 1995, Journal of psychoactive drugs.