Harshalatha P, Chandrasekhar KB, and Chandrasekhar MV. 2018. “A Novel Stability Indicating Method Development and Validation for the Simultaneous Estimation of Velpatasvir & Sofosbuvir in Bulk and Its Pharmaceutical Formulations”. International Journal of Research in Pharmaceutical Sciences 9 (2):466-71. https://ijrps.com/home/article/view/4236.