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2. J. Van Fleck, The Theory of Electric and Magnetic Susceptibilities, Oxford (1932).
3. Ya. G. Dorfman, Magnetic Properties and Structure of Substances [in Russian], Gostekhizdat, Moscow (1955).
4. Ya. G. Dorfman, Diamagnetism and the Chemical Bond [in Russian], Fizmatgiz, Moscow (1961).
5. B. Auer, Ann. Physik,18, 593 (1933).