1. Agapov, A.M., Belen’kii, M.I., Gavrilov, V.M., et al., Radioactive Pollution of the Neva River-Lake Ladoga Water System, Radiokhimiya, 2003, vol. 45, no. 4, pp. 370–374.
2. Alekseenko, V.A., Dynamics of Discharge of Chernobyl Radiocesium from River Watersheds of the Baltic Sea Basin in 1986–1988, Radiokhimiya, 1997, vol. 38, no. 2, pp. 187–190.
3. Bakunov, N.A., and Bol’shiyanov, D.Yu., Global 137 Cs as a Marker of Sedimentation in Deep Lakes, 2007, vol. 49, no. 2, pp. 170–172.
4. Bakunov, N.A., Bol’shiyanov, D.Yu., and Makarov, A.S., Retrospective Assessment of Onega Lake Pollution by Global 90Sr and Lake Water Purification, Radiokhimiya, 2010, vol. 52, no. 2, pp. 186–189.
5. Boltneva, L.I., Izrael’, Yu.A., Ionov, V.A., et al., Global Sr-90 and Cs-137 Pollution and Doses of External Radiation in USSR Territory, At. Energ., 1977, vol. 42, no. 5, pp. 355–360.