1. Akulov, N.I., The Behavior of Minor Elements in Paleozoic Nodules of the South Tunguska Basin, in Konkretsii i konkretsionnyi analiz neftegazonosnykh formatsii (Nodules and Nodule Analysis of Petroliferous Formations), Tyumen: Zap. Sib. Nauchno-Issled. Geol. Nefti Inst., 1983, pp. 115–116.
2. Baranov, K.A., On the Tendency of Nodules to Acquire Spherical Shape, Priroda, 1946, no. 9, pp. 44–46.
3. Bushinskii, G.I., Depositional Environments of Siderite, Vivianite, and Limonite in Swamps of Belorus, Byull. Mosk. O-va Ispyt. Prir., New Series, Otd. Geol., 1946, vol. 21, no. 3, pp. 65–80.
4. Gordeev, V.V., Rechnoi stok v okean i cherty ego geokhimii (River Runoff into the Ocean and Its Geochemical Features), Moscow: Nauka, 1983.
5. Gurevich, A.B., Sal’nikova, L.L., and Toporets, S.A., Carbonate Nodules in the Tunguska Basin, in Konkretsii i konkretsionnyi analiz (Nodules and Nodule Analysis), Moscow: Nauka, 1977, pp. 89–95.