Ezeonwumelu, I., A. M. Shinde, and V. M. Gadiraju. “Performance Evaluation of DTC, MPDTC and DDTC Methods for Drive of a SPMSM”. American Scientific Research Journal for Engineering, Technology, and Sciences, vol. 35, no. 1, Sept. 2017, pp. 201-14, https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/3241.