1. M. J. O'Neil , The Merck index: an encyclopedia of chemicals, drugs and biologicals , Whitehouse Station , 14th edn, 2006 , p. 328
2. S. C. Sweetman , Martindale: the complete drug reference , Pharmaceutical Press , London , 36th edn, 2009
3. Q. A. Xu and L. A.Trissel , Stability-indicating HPLC methods for drug analysis , Pharmaceutical Press , Washington , 3rd edn, 2008 , pp. 168–170
4. J. G. Hardman and L. E.Limbird , Goodman & Gilman: The pharmacological basis of therapeutics , McGraw Hill , Rio de Janeiro , 10th edn, 2003 , pp. 903–908
5. B. G. Katzung , Basic and clinical pharmacology , Guanabara Koogan , Rio de Janeiro , 9th edn, 2005 , pp. 620–621