Kalam, S., I, . R. and S, O. (2014) “Synthesis and In vitro P-Glycoprotein Inhibitory Activity of Novel 1,4-Dihydropyridine Derivatives”, International Journal of Pharmaceutical Sciences and Nanotechnology(IJPSN), 7(3), pp. 2544–2552. doi: 10.37285/ijpsn.2014.7.3.6.