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2. See for example: Proc. 3 rd. Intern. Conf. and Business Forum on Polymer Bonded Magnets, Atlanta, GA, April 1996, 1996; Proc. Intern. Symp. on Ferrites, Tokyo, September 1997, 1997; Proc. 6th Intern. Conf. on Ferrites, Tokyo, October 1992, 1992.
3. G. F. Goya, H. R. Rechenberg, J. Appl. Phys., 84 (1998) 1101.
4. R. G. Kulkarni, V. U. Patil, J. Mater. Sci., 17 (1982) 843.
5. S. Krupicka, P. Novak, Oxide Spinels (Ferromagnetic Materials) Vol. 3, E. P. Wohlfarth (Ed.) North-Holland, Amsterdam, 1982.