A. Burkov, E. Krasilnikyants, A. Smirnov, and G. Bouldukan, “The Re-examination of Adjustment of the Rotor Magnetic Field Observer in the Induction Motor”, ECCE, vol. 4, no. 1, pp. 38–44, Dec. 2013, doi: 10.2478/ecce-2013-0020.