References
- Maharaj I., Nairn J. G., Campbell J. B. J. Pharm. Sci. 1984; 73: 39
- Madan P. L., Shanbhag S. R. J. Pharm. Pharmacol. 1978; 30: 65
- Merkle H. P., Speiser P. J. Pharm. Sci. 1973; 62: 1444
- “The United States Pharmacopeia,” 20th revision. United States Pharmacopeial Convention Inc., Rockville, Md 1980; 1105