1. Yu. A. Balashov, Geochemistry of Rare Earth Elements (Nauka, Moscow, 1976) [in Russian].
2. G. N. Baturin, Phosphorites on the Floor of the Oceans (Nauka, Moscow, 1978) [in Russian].
3. G. N. Baturin, “Studies of the Phosphorites of the Sea of Japan,” Vestn. Akad. Nauk SSSR, No. 6, 116–122 (1986).
4. G. N. Baturin, “Hypotheses of Phosphogenesis and Oceanic Environment,” Litol. Polezn. Iskop., No. 5, 451–472 (1999).
5. G. N. Baturin, Phosphate Accumulation in the Ocean (Nauka, Moscow, 2004) [in Russian].