1. Kuvshinov G.E., Soloviev D.B. Modern areas in development of current transducers for relay protection and automation. - Vladivostok: editorial and publishing department of Vladivostok branch of Russian Customs Academy, 2012, p. 316
2. Kozlov V.K., Lizunov I.N., Novikov S.I., Remote current meter. Kazan State Power Engineering University. Journal: Bulletin of higher educational institutions, “Problems of energy”, 2012, No. 9-10. pp. 98–101.
3. Kovzhenkin V.S. Research of distance current transformers as applied to relay protection of 110-220 kV lines: dissertation of candidate of technical sciences. Moscow: 1997, p.185.
4. Patent of Republic of Uzbekistan (UZ) No. IAP 06465. Device for measuring currents in the wires of a three-phase high-voltage line / Amirov S.F., Jumaboev S.Kh., Faizullaev J.S., Babanazarova N.K.// Official bulletin, 2021, No. 4
5. Amirov S.F., Babanazarova N.K. Magnetic circuit analysis of current transformer with multiple-turn core // Science journal «European applied sciences». Germany, 2016. № 7, p. 23–26.