Bugenis, S. J., J. Vanagas, and S. Gečys. “Optimal Phase Number of Induction Motor With the Integrated Frequency Converter”. Elektronika ir Elektrotechnika 88, no. 8 (October 20, 2008): 67-70. Accessed September 27, 2022. https://eejournal.ktu.lt/index.php/elt/article/view/11344.