O. M. Kothiya, B. A. Patel, K. N. Patel, and M. M. Patel, “FORMULATION AND CHARACTERIZATION OF SUSTAINED RELEASE MATRIX TABLETS OF IVABRADINE USING 32 FULL FACTORIAL DESIGN”, Int J App Pharm, vol. 10, no. 1, pp. 59–66, Jan. 2018.