1. P. F. Andrushchenko, “Mineral Composition and Structure of Ferromanganese Nodules,” in Ferromanganese Nodules of the Pacific Ocean (Nauka, Moscow, 1976), pp. 123–162 [in Russian].
2. L. I. Anikeeva, S. I. Andreev, Yu. B. Kazmin, et al., “Morphology of Ferromanganese Nodules,” in Ferromanganese Nodules in the World Ocean (Nedra, Moscow, 1984), pp. 62–104 [in Russian].
3. L. I. Anikeeva, V. E. Kazakova, and M. P. Torokhov, “Mineral Composition,” in Cobalt-Rich Ores in the World Ocean (VNIIOkeangeologiya, St. Petersburg, 2002), pp. 41–54 [in Russian].
4. G. N. Baturin, Geochemistry of Ferromanganese Nodules of the World Ocean (Nauka, Moscow, 1986) [in Russian].
5. G. N. Baturin, “Ore Potential of the Ocean,” Priroda, No. 5, 20–30 (2002).