V, S., R. . Sireesha, B. . . Sivagami, V. P. . Kumar, R. . Chandrasekar, and M. N. . Babu. “Simultaneous Estimation of Sofosbuvir and Velpatasvir Tablets by RP- HPLC Method”. International Journal of Research and Development in Pharmacy & Life Sciences, vol. 7, no. 5, Oct. 2018, pp. 3092 -99, doi:10.21276/IJRDPL.2278-0238.2018.7(5).3092-3099.