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3. G. Arrhenius, “Pelagic Sediments,” in The Sea (Interscience, New York, 1963), Vol. 3, pp. 655–727.
4. G. N. Baturin, Geochemistry of Oceanic Ferromanganese Nodules (Nauka, Moscow, 1986) [in Russian].
5. E. S. Bazilevskaya, Chemical and Mineralogical Study of Manganese Ores (Nauka, Moscow, 1976) [in Russian].