1. J. Smit, H.P. Wijn: Ferrites (Philips Tech. Lib., Eindhoven 1962)
2. S. Krupicka: Physik der Ferrite (Vieweg, Braunschweig 1973)
3. S. Krupicka, P. Novak: Ferromagnetic Materials, Vol. 3, Chap. 4, ed. by E.P. Wohlfarth (North Holland, Amsterdam 1982)
4. H. Kronmuller, F. Walz: Phil. Mag. B 42, 433 (1980)
5. A. Broese van Groenou: Appl. Phys. 2, 47 (1973)