BALAKRISHNAN, B.; DHANDAPANI, M.; PITCHAIKUTTI, S.; SIVAMANI, G. IMPROVING THE EFFICACY OF CYCLOPHOSPHAMIDE BY USING VERAPAMIL AS A P-GLYCOPROTEIN INHIBITOR IN BREAST CARCINOMA. Journal of Drug Delivery and Therapeutics, v. 8, n. 5, p. 349-353, 10 set. 2018.