V. PADMINI M and G. S. D, “STABILITY-INDICATING RP-HPLC METHOD FOR SIMULTANEOUS ESTIMATION OF SOFOSBUVIR, VELPATASVIR, AND VOXILAPREVIR IN BULK AND TABLET DOSAGE FORMS”, Asian J Pharm Clin Res, vol. 13, no. 2, pp. 131–139, Feb. 2020.