1. The Merck Index, 13th ed.; Merck & Co., Inc. Whitehouse Station, NJ, 2001; p 7588.
2. (b) Majerus, P. W.; Broze, G. J.; Miletich, J. P.; Tollefsen, D. M.Goodman and Gilman's The Pharmacological Basis of Therapeutics, 9th ed.; Hardman, J. G., Limbird, L. E., Eds.; McGraw-Hill: New York, 1996; pp 640−641.