1. E. P. Volkov and E. A. Dzhafarov, “Superconducting transformer with a rotating magnetic field,” Izv. Ross. Akad. Nauk., Energ., No. 3, 113–121 (2012), Therm. Eng. 59, 994–999 (2012).
2. E. P. Volkov, E. A. Dzhafarov, L. S. Fleishman, and Z. E. Dzhafarov, Patent RF. No. 2604056, Byull. Izobret., No. 34 (2016).
3. Sh. I. Lutidze and E. A. Dzhafarov, Superconducting Transformers (Nauchtekhlitizdat, Moscow, 2002) [in Russian].
4. G. I. Atabekov, Theoretical Fundamentals of Electrical Engineering (Energiya, Moscow, 1964) [in Russian].
5. E. P. Volkov and E. A. Dzhafarov, “Fluxes of electromagnetic field energy in HTSC transformers,” Izv. Ross. Akad. Nauk., Energ., No. 1, 3–14 (2016), Therm. Eng. 63, 917–924 (2016).