1. R.J. Baldessarini, in Goodman and Gilman's, The Pharmacological Basis of Therapeutics, 7th ed., in: A.G. Gilman, L.S. Goodman, T.W. Rall, F. Murad (Eds.), Macmillan Publishing Co., N.Y., 1985, pp. 391, 423, 426
2. The British Pharmacopoeia, Her Majesty's Stationery Office, London, 1993
3. The United States Pharmacopoeia, XXII Revision, National Formulary XVII, American Pharmaceutical Association, Washington, D.C., 1990