1. 1. The United States Pharmacopeia, 2000, Asian Edition, January 1, US Pharmcopial Convention, Inc., MD, 178.
2. 2. K. Parfitt, Martindale, The complete drug reference, 32nd ed., 1999, London, Pharmaceutical Press, 455.
3. 3. N. Bibire, G. Tantaru, V. Dorneanu, M. Stan, and M. Apostu, Rev. Med. Chir. Soc. Med. Nat., 2003, 107, 218.
4. 4. D. W. Wang, X. W. Li, and Y. Q. Liu, Fenxi Kexue Xuebao, 2002, 18, 237.
5. Construction and Evaluation of Atropine Selective Electrodes. Their Application to Ophthalmic Formulations.