1. Merck Index, Merck, Rahway, NJ, 11th ed., 1989, p. 138.
2. Japan Pharmacopoeia, 12th ed. with commentary, Hirokawa Syoten, Tokyo, 1991, p. D-859.
3. U.S. Pharmacopeia, 23rd Revision, US Pharmacopeial Convention, Rockville, MD, 1995, p. 145.
4. SPECTROPHOTOMETRIC DETERMINATION OF ATROPINE