1. Carroll, M. E., & Meisch, R. A. (1978). Etonitazene as a reinforcer: Oral intake of etonitazene by rhesus monkeys. Psychopharmacology, 59, 225–229.
2. Carroll, M. E., & Meisch, R. A. (1979). Effects of food deprivation on etonitazene consumption in rats. Pharmacology, Biochemistry and Behavior, 10, 155–159.
3. Chernov, H. L, Ambrose, F. I., & Plummer, A. J. (1968). Pattern of consumption of etonitazene solutions by naive rats. Archives of International Pharmacodynamics, 175, 309–318.
4. Chipkin, R. E., & Rosecrans, J. A. (1978). Aversiveness of oral methadone in rats. Psychopharmacology, 57, 303–310.
5. D’Amour, F. E., & Smith, D. L. (1941). A method for determining loss of pain sensation. Journal of Pharmacology and Experimental Therapeutics, 72, 74–79.