1. N. B. Eddy, Chem. Ind. (London), 1462–1469 (1959).
2. C. G. Farmilo, P. M. Oestreicher, and L. Levi, Bull. Narcotics, U. N. Dept. Social Affairs 6(1), 7–19, (1954).
3. H. C. Freimuth, in “Toxicology, Mechanisms and Analytical Methods” (C. P. Stewart and A. Stolman, eds.), Vol. 1, pp. 285–302, Academic Press, New York (1960).
4. A. S. Curry in “Methods of Biochemical Analysis” (D. Glick, ed.), 7, pp. 39–76, Interscience, New York (1959).
5. J. V. Jackson in “Identification of Drugs and Poisons,” pp. 15–26, Pharmaceutical Society of Great Britain (1965).