B. Poornima, P. Jayachandra Reddy, & D.S.S.N. Neelima. (2022). Method development and validation for the simultaneous determination of Ritonavir and Lopinavir by RP-HPLC and by UV- Spectrophotometry. IJPAR JOURNAL, 8(2), 227–240. https://doi.org/10.61096/ijpar.v8.iss2.2019.227-240