1. S. V. Vonsovskii and Yu. A. Izyumov, Usp. Fiz. Nauk 77, 377 (1962) (Sov. Phys. Usp. 5, 219 (1962)].
2. S. V. Vonsovskii, Magnetism (Nauka, Moscow, 1971; Wiley, New York, 1974).
3. S. V. Vonsovskii and E. A. Turov, Zh. Tekh. Fiz. 24, 419 (1953).
4. A. A. Yudin, Vestn. Mosk. Univ., Ser. 3: Fiz., Astron., No. 4, 89 (1958).
5. C. Zener, Phys. Rev. 81, 440 (1951).