1. Braginskii, L.P., Some principles of classification of freshwater systems by toxic pollution levels, Gidrobiol. Zh., 1985, vol. 21, no. 6 pp. 65–74.
2. Kutsenko, S.A., Osnovy toksikologii (Fundamentals of Toxicology), St. Petersburg: Nauka, 2004.
3. Metodicheskoe rukovodstvo po biotestirovaniyu vody (RD 118-02-90) (Methodological Guide on Water Bioassay (RD 118-02-90)), Moscow, 1991.
4. Nikanorov, A.M. and Tsirkunov, V.V., Sistemy monitoringa kachestva poverkhnostnykh vod. Ch. 1. Sistema monitoringa kachestva poverkhnostnykh vod SShA i Kanady i napravlenie ikh evolyutsii (Systems of Surface Water Quality Monitoring. Part 1. System of Surface Water Quality Monitoring in USA and Canada and the Direction of Their Evolution), Leningrad: Gidrometizdat, 1994.
5. Pravila okhrany poverkhnostnykh vod (Regulations on Surface Water Protection), Moscow: Goskomprirody SSSR, 1991.