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2. Some properties of γ-Fe2O3 obtained by hydrogen reduction of α-Fe2O3;Aharoni;J. Phys. Chem. Solids,1962
3. Magnetic properties of FeO–Fe2O3–TiO2 system as a basis of rock magnetism;Akimoto;J. Phys. Soc. Japan,1962
4. Magnetic properties of TiFe2O4–Fe3O4 system and their change with oxidation;Akimoto;J. Geomagn. Geoelectr.,1957
5. The Origin of the Solar System.;Alfvén,1954