1. Leonhard W., Control of Electrical Drives. New York: Springer-Verlag, 1985,
2. Tzou Ying-Yu, Hsiang-Jui Wu, Multimicroprocessor-Based Robust Control of an AC Induction Servo Motor, IEEE Transactions on industry applications, vol. 26, No. 3, may/june 1990.
3. Chan, CC; Zhu, G; Wu, J, Robustness Analysis of Induction Motor Decoupling Adaption System, The 21st International Conference on Industrial Electronics, Control, and Instrumentation Proceedings, Orlando, Florida, USA, 6-10 November 1995, v. 2, p. 908–912, IEEE.
4. Guergov S., N. Nikolova, Gr. Stambolov, Robust control application possibilities for machining robots, 16-th Conference on electrical machines, drives and power systems (ELMA) 6-8 June 2019, Varna, Bulgaria, IEEE Catalog number CFP19L07-USB, ISBN 978-1-7281-1412-5, pp. 562–565
5. Guergov, S. T, Nikolova, N. G, Stefanov, G. K, Application machining robots in processing operations, IOP Conference Series: Materials Science and Engineering, Volume 878, 9TH International Scientific Conference “TechSys 2020” - Engineering, Technologies And Systems 14-16 May 2020, pp.