Vaimann, T., A. Kallaste, and A. Kilk. “Using Clarke Vector Approach for Stator Current and Voltage Analysis on Induction Motors With Broken Rotor Bars”. Elektronika Ir Elektrotechnika, vol. 123, no. 7, Sept. 2012, pp. 17-20, doi:10.5755/j01.eee.123.7.2368.