1. Rutledge, T. F. 1988.Acetylenic Compounds, Preparation and Subatitution Reaction314–33. New York: Reinnold book Corp. “”., P :(.
2. 1973.British Pharmacopoeia191 Pharmaceutical Press, London, p.
3. 1975.National Formulary,, 14 th Ed. 277Washington, DC: American Pharmaceuticul Association.
4. Pharmacopoeial, U. S., ed. 1980.United States Pharmacopoeia xx - National Formulary xv305