1. Kudrin B.I. Power supply of industrial enterprises. M.: “Energoatomizdat”, 1995, 416 p.
2. Poskrobko A.A. Bratolyubov V. B. Non-contact switching and control semiconductor devices in alternating current. Moscow. Energy, p. 192, (1978).
3. Chopin L.V. Contactless electrical automatic devices. M, Energoatomizdat, p. 446 (1986).
4. Patent RUz IAP № 03975, Non-contact device for switching the booster transformer windings. Kadirov T.M., Usmanov E.G., Abduraimov E.Kh. Publ. in “Official newsletter”, 2009, № 7.pp 41-42.
5. Abduraimov E.Kh., Berdiev U.T., Burkhonkhodjaev O. M. Contactless switching devices. Bulletin of TashIIIZhT. Tashkent-2013, №. 1-2, -С.55-59.