1. Pai, G.G.; Kishore, N.; Chaudhari, N.P.; Anjaneyulu, N.; Ghogare, B.N.2011, U.S. Patent No. 7,872,154 B2.
2. Detection of impurities in a tablet of Atorvastatin;Islam;KYAMCH J.,2011
3. An efficient synthesis of highly substituted pyrrole and bispyrrole derivatives;Sagyam;J. Het. Chem.,2007
4. New stability indicating method for qualification of impurities in Amlodipine and Atorvastatin calcium tablet by validated HPLC;Eranki;Int. J. Pharmaceut. Res. Scholar,2013
5. De Lange, B.2013, U.S. Patent No. 20130041162 A.