1. J. E. Knowles, ?Some observations of Biller patterns on polycrystalline square-loop ferrites, and a theoretical explanation of the loop shape and pulse characteristics of the material,? Proc. Phys. Soc.,75, No. 6(486), 885?897 (1960).
2. I. B. Goodenough, ?Chemical inhomogeneities and square B-H loops,? J. Appl. Phys.,36, No. 8, 2342?2346 (1965).
3. E. A. Schwabe, ?Ueber die Abhaengigkeit der Schalteigenschaften von Rechteckferriten von der Korngrobe,? Z. Angew. Phys.,17, No. 3, 231?235 (1964).
4. L. M. Letyuk and V. A. Nifontov, ?Effect of microstructure parameters on the shape of the hysteresis loop,? Elektron. Tekh., Mater., No. 4, 38?44 (1975).
5. Yu. D. Tret'yakov, N. N. Oleinikov, and V. A. Granik, Physicochemical Principles of the Heat Treatment of Ferrites [in Russian], Moscow State University, Moscow (1973).