1. Arkhangelski, A. D., 1927. Stratigraphy and geological conditions of formation of Russian phosphorites. In: M. M. Tetiaev (Editor), Phosphorites of the U.S.S.R., pp. 13–21 (Russ.).
2. On the chemistry of the Bering Sea sediments;Bruevitch;Papers Inst. Oceanol.,1958
3. Lithology of Cretaceous Deposits of the Dnieper-Donets Trough;Bushinski;Acad. Sci. U.S.S.R.,1954
4. Phosphorite facies and phosphorite genesis;Kasakov,1937
5. The Phosphoria, Park City and Shedhorn formations in the western phosphate field;McKelvey;U.S. Geol. Surv., Profess. Papers,1959