1. E. L. Way and T. K. Adler, Pharmacol. Rev. 12, 383–445 (1960).
2. E. L. Way and T. K. Adler, “The Biological Disposition of Morphine and its Surrogates,” World Health Organization, Geneva, pp. 1–114 (1962).
3. E. L. Way, in The Addictive States (A. Wikler, ed.), Vol. 46, pp. 13–31, Williams & Wilkins, Baltimore (1968).
4. E. Nelson, J. Pharm. Sci., 50, 181–192 (1961).
5. B. B. Brodie and C. A. M. Hogben, J. Pharm. Pharmacol. 9, 345–380 (1957).