Havele, S. and Dhaneshwar, S. (2010) Development and Validation of a HPLC Method for the Determination of Metformin Hydrochloride, Gliclazide and Piogliglitazone Hydrochloride in Multicomponent Formulation. Webmed Central Pharmaceutical Sciences, 1, Article ID: WMC001078.
 Rojas, L.B.A. and Gomes, M.B. (2013) Metformin: An Old but Still the Best Treatment for Type 2 Diabetes. Diabetology and Metabolic Syndrome, 5, 1-15.
 Srinivasa Rao, P., Rama Chandran, D., Murali, K. and Srinivasu, S. (2013) Stability Indicating Isocratic Reverse Phase HPLC Method with PDA Detector for the Estimation of Saxagliptin in Bulk Drugs and in Its Formulation. International Journal of Pharma Sciences, 3, 333-342.
 Murthy, T.G.K. and Geethanjali, J. (2014) Development of a Validated RP-HPLC Method for Simultaneous Estimation of Metformin Hydrochloride and Rosuvastatin Calcium in Bulk and In-House Formulation. Journal of Chromatography and Separation Techniques, 5, 1-7.
 ICH Harmonised Tripartite Guideline (2005) Validation of Analytical Procedures: Text and Methodology Q2(R1). International Conference on Harmonisation of Technical Requirements for Registration of Pharmaceuticals for Human Use, Geneva, 1-13.