Коцур, М. И., П. Д. Андриенко, and И. М. Коцур. “Estimation of Isolation System Resource drive’s Asynchronous Motor With Phase Rotor in Sub Synchronous Frequency Rotation”. Eastern-European Journal of Enterprise Technologies, vol. 5, no. 8(53), Dec. 2011, pp. 41-46, doi:10.15587/1729-4061.2011.1277.