1. Albertson , N.F. 1974 Cyclazocine and congeners Narcotic Antagonists, Advances in Biochemical Psychopharmacology 8 Braude , C. Harris , L.S. May , E.L. Smith , J.P. Villarreal , J.E. 63 79 Raven Press
2. Evaluation of new compounds for morphine-like physical dependence in the rhesus monkey;Deneau;Bull. Problems Drug Dependence,1966
3. Eddy , N.B. May , E.L. 1966 6,7-Benzomorphans Synthetic Analgesics. International Series of Monographs in Organic Chemistry 8 Barton , D.H.R. von Doering , W. 113 182 Pergamon Press
4. Stereospecific and non-specific interactions of the morphine congener levorphanol in subcellular fractions of mouse brain;Goldstein;Proc. Natn. Acad. Sci. U.S.A.,1971
5. Purification and properties of enkephalin-the possible endogenous ligand for the morphine receptor;Hughes;Life Sci.,1975a