1. L. I. Rabkin, S. A. Soskin, and B. Sh. Epshtein, Ferrites [in Russian], Energiya, Leningrad (1968).
2. V. G. Glotov, Ferrite Cores for Computer Memory Devices [in Russian], Energiya, Moscow (1977).
3. Yu. D. Tret’yakov, N. N. Oleinikov, and V. A. Granik, Physical and Chemical Principles of Ferrite Heat Treatment [in Russian], Izdat. Mosk. Gos. Univ., Moscow (1973).
4. H. Wijn, E. W. Goiter, S. I. Esveldt, and P. Geldermans, “Conditions for square hysteresis loops in ferrites,” Philips Tech. Rev., 16, 49–58 (1954).
5. Z. Shch. Ignat’eva and V. A. Bokov, “Spontaneous rectangularity and squareness of the hysteresis loop in ferrites,” Zhurn. Teor. Fiz., 50, No.9, 1987–1991 (1980).