P. A. Prabhakara, et al. “SPEED CONTROL OF A BDFRM DRIVE BY USING MODEL PERIDECTIVE CURRENT CONTROL TECHNIQUE”. PalArch’s Journal of Archaeology of Egypt Egyptology, vol. 18, no. 10, Oct. 2021, pp. 1893-1, https://archives.palarch.nl/index.php/jae/article/view/10115.