Kalunta, F. O., T. O. Akinbulire, and F. N. Okafor. “MODELLING AND ANALYSIS OF THREE PHASE CONTROLLED RECTIFIERS USING PIVOTAL FUNCTION TECHNIQUE”. UNILAG Journal of Medicine, Science and Technology, Vol. 4, no. 1, Jan. 2019, pp. 82-95, http://ujmst.unilag.edu.ng/article/view/130.