1. L. I. Anikeeva, S. I. Andreev, P. A. Aleksandrov, et al., “Platinum content in iron-manganese concretions of the World Ocean,” in Platinum in Russia, Vol. 3, Book 2: Development of Mineral Resources of Platinum Metals in 21st Century (Geoinformmark, Moscow, 1999), pp. 338–345.
2. A. M. Asavin, I. V. Kubrakova, M. E. Mel’nikov, O. A. Tyutyunnik, and E. I. Chesalova, “Geochemical zoning in ferromanganese crusts of Ita-Mai Tai guyot,” Geochem. Int. 48, 423–445 (2010).
3. A. S. Astakhov, V. V. Sattarova, A. I. Svininnikov, N. V. Astakhova, M. M. Domanov, and M. V. Ivanov, “Manganese metalliferous sediments of the Deryugin Basin (Sea of Okhotsk): Chemical composition and geological setting,” Russ. J. Pac. Geol. 1, 418–434 (2007).
4. N. V. Astakhova, “Precious and nonferrous metals in the ferromanganese crusts of the central Sea of Okhotsk,” Oceanology (Engl. Transl.) 49, 405–417 (2009).
5. N. V. Astakhova, “Occurrence forms and distribution of precious and base metals in ferromanganese crusts from the Sea of Japan,” Oceanology (Engl. Transl.) 53, 686–701 (2013).