"U-50,488, a selective kappa opioid agonist: comparison to other reputed kappa agonists". Progress in Neuro-Psychopharmacology & Biological Psychiatry. 6 (4–6): 467-70. 1982. doi:10.1016/S0278-5846(82)80130-9. PMID6298890.
"Role of opioidergic and serotonergic mechanisms in cough and antitussives". Pulmonary Pharmacology. 9 (5–6): 349-56. 1996. doi:10.1006/pulp.1996.0046. PMID9232674.
"Roles of kappa-opioid receptor agonists in learning and memory impairment in animal models". Methods and Findings in Experimental and Clinical Pharmacology. 20 (7): 595-9. September 1998. doi:10.1358/mf.1998.20.7.485724. PMID9819804.
"U-50,488 and the kappa receptor: a personalized account covering the period 1973 to 1990". Progress in Drug Research. Fortschritte der Arzneimittelforschung. Progrès des Recherches Pharmaceutiques. 52: 167-95. 1999. doi:10.1007/978-3-0348-8730-4_4. PMID10396128.
"U-50,488, a selective kappa opioid agonist: comparison to other reputed kappa agonists". Progress in Neuro-Psychopharmacology & Biological Psychiatry. 6 (4–6): 467-70. 1982. doi:10.1016/S0278-5846(82)80130-9. PMID6298890.
"Role of opioidergic and serotonergic mechanisms in cough and antitussives". Pulmonary Pharmacology. 9 (5–6): 349-56. 1996. doi:10.1006/pulp.1996.0046. PMID9232674.
"Roles of kappa-opioid receptor agonists in learning and memory impairment in animal models". Methods and Findings in Experimental and Clinical Pharmacology. 20 (7): 595-9. September 1998. doi:10.1358/mf.1998.20.7.485724. PMID9819804.
"U-50,488 and the kappa receptor: a personalized account covering the period 1973 to 1990". Progress in Drug Research. Fortschritte der Arzneimittelforschung. Progrès des Recherches Pharmaceutiques. 52: 167-95. 1999. doi:10.1007/978-3-0348-8730-4_4. PMID10396128.
"U-50,488 and the kappa receptor. Part II: 1991-1998". Progress in Drug Research. Fortschritte der Arzneimittelforschung. Progrès des Recherches Pharmaceutiques. 53: 1-51. 1999. PMID10616295.
