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3. E. V. Artamonov, M. A. Libman, and N. N. Rudanovskii, “Modern Magnetically Hard Materials for Rotors of Synchronous Hysteresis Electric Motors,” Stal’, No. 6, 65–68 (2007).
4. B. A. Delektorskii, N. Z. Mastyaev, and I. N. Orlov, Design of Gyroscope Electric Motors (Mashinostroenie, Moscow, 1968) [in Russian].
5. G. V. Pshechenkova, “Study of Transformations in Deformed Iron-Cobalt-Vanadium Alloys for Permanent Magnets,” Pretsizion. Splavy, No. 15, 111–125 (1956).