Uber, C. P., F. L. D. Pontes, J. C. Gasparetto, T. M. G. D. Francisco, M. S. Piantavini, M. A. Cardoso, and R. Pontarolo. “HPLC-MS/MS METHOD FOR SIMULTANEOUS QUANTIFICATION OF VILDAGLIPTIN, METFORMIN, AND METFORMIN-RELATED COMPOUNDS IN TABLETS”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 6, no. 11, Nov. 2014, pp. 203-7, https://journals.innovareacademics.in/index.php/ijpps/article/view/3068.