S., NIRANJANI, and VENKATACHALAM K. 2019. “SPECTROPHOTOMETRIC DETERMINATION OF ATORVASTATIN CALCIUM AND PITAVASTATIN CALCIUM THROUGH ION-PAIR COMPLEX FORMATION USING ACID DYES IN PHARMACEUTICAL FORMULATIONS AND HUMAN URINE SAMPLES”. International Journal of Applied Pharmaceutics 11 (6):171-80. https://doi.org/10.22159/ijap.2019v11i6.35246.