Haritha G, Vijey Aanandhi M, and Shanmugasundaram P. “A Quality by Design (QbD) Based Method Development and Validation of a High-Performance Liquid Chromatography for the Simultaneous Estimation of Metformin and Ertugliflozin”. International Journal of Research in Pharmaceutical Sciences, vol. 12, no. 3, July 2021, pp. 1709-17, https://ijrps.com/home/article/view/50.