1. See, for instance Oxide Magnetic Materials, Clarendon Press, Oxford 1972.
2. Tables of Antiferromagnetic Materials, Brookhaven Nat. Lab. (BNL 13822), Upton (N. Y.) 1969 and in: Amer. Inst. Phys. Handbook, third edition, McGraw-Hill, New York.
3. Magnetism and the Chemical Bond, Interscience, New York 1963;
4. Cooperative Dynamic Jahn-Teller Effect. I. Molecular Field Treatment of Spinels
5. Electronic conductivity and transition point of magnetite (“Fe3O4”)