- Hanan I. EL-Shorbagy, Fawzi Elsebaei, Sherin F. Hammad, Amina M. El-Brashy. A green stability-indicating RP-HPLC-UV method using factorial design for determination of ribavirin, sofosbuvir and ledipasvir: Application to average content, acid degradation kinetics and in vitro drug interactions study, Microchemical Journal 2020, 158, 105251. https://www.sciencedirect.com/science/article/pii/S0026265X20310997?via%3Dihub