Cohen, A., & Harrison, M. D. (1986).
The "urge to classify" the drug user: A review of classifications by pattern of abuse. International Journal of the Addictions, 21 (12), 1249-1260.
Cohen, A. (1984).
The"urge to classify" the narcotic addict: A review of psychiatric classification: II. International Journal of the Addictions, 19 (3), 335-353.
Cohen, A. (1982).
The "urge to classify" the narcotic addict: A review of psychiatric classification: I. International Journal of the Addictions, 17 (2), 213-225.