1. Guess, W. L., Rosenbluth, S. A., Schmidt, B., and Autian, J., J. Pharm. Sci., 54, 156 (1965).
2. The United States of America Pharmacopeia XVIII, Mack Publishing Co., Easton, Pa., 1970, p. 926–929.
3. Autian, J., Crit. Rev. Toxicol., 2, 1 (1973).
4. Oyama, V. and Eagle, H., Proc. Soc. Exp. Biol. Med., 91, 305 (1956).
5. Lowry, O. H., Rosebrough, N. J., Farr, A. L., and Randall, R. J., J. Biol. Chem., 193, 265 (1951).