P, Harshalatha, Kothapalli Bannoth  Chandrasekhar, & Chandrasekhar MV. " Stability indicating RP-HPLC method for simultaneous determination of Grazoprevir and Elbasvir in bulk and tablet dosage form." International Journal of Research in Pharmaceutical Sciences [Online], 9.4 (2018): 1068-1076. Web. 22 Mar. 2019