1. A. F. Basha, V. I. Chechernikov, and L. M. Lisitsii, Fiz. Met. Metalloved.,37, 1, 209 (1974).
2. I. M. Gable, W. C. Kochler, and E. O. Wollan, Phys. Rev.,136A, 240 (1964).
3. V. I. Chechernikov, Magnetic Measurements [in Russian], Izd. MGU (1969).
4. P. G. DeGennes, J. Phys. (Paris),23, 510 (1962).
5. D. C. Mattis, The Theory of Magnetism, New York (1965).