Van Vleck, J. «Theory of the Variations in Paramagnetic Anisotropy Among Different Salts of the Iron Group». Physical Review, 41, 1932, pàg. 208. Bibcode: 1932PhRv...41..208V. DOI: 10.1103/PhysRev.41.208.
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Van Vleck, J. «Theory of the Variations in Paramagnetic Anisotropy Among Different Salts of the Iron Group». Physical Review, 41, 1932, pàg. 208. Bibcode: 1932PhRv...41..208V. DOI: 10.1103/PhysRev.41.208.