LABIB, S., M. NASR, and M. NASR. “FORMULATION AND EVALUATION OF ATORVASTATIN CALCIUM NANOCRYSTALS CONTAINING P-GLYCOPROTEIN INHIBITORS FOR ENHANCING ORAL DELIVERY”. International Journal of Current Pharmaceutical Research, vol. 13, no. 3, May 2021, pp. 19-23, doi:10.22159/ijcpr.2021v13i3.42087.