C. R. Reichal and M. G. Rao, “DEVELOPMENT AND VALIDATION OF SPECTROPHOTOMETRIC METHOD FOR SIMULTANEOUS ESTIMATION OF GLICLAZIDE AND SITAGLIPTIN PHOSPHATE MONOHYDRATE IN BULK AND PHARMACEUTICAL DOSAGE FORM”, Int J Pharm Pharm Sci, vol. 7, no. 6, pp. 372–376, Jun. 2015.