1. Alekin, O.A., V.G. Drabkova & I.S. Koplan-Diks. 1985. Problem of eutrophication of continental waters. Pp. 25-34 in: Antropogennoye evtrofirovaniye prirodnykh vod. Materialy III Vsesoyuznogo simpoziuma. September 1983. (Anthropogenic eutrophication of natural waters. Proceedings of the III All-Union Symposium.) Moscow & Chernogolovka. [Rus.]
2. Altunin, V.S. & T.M. Belavtseva. 1993. Kontrol kachestva vody: spravochnik. (Water quality control: reference book.) Moscow, Kolos Press. 367 pp. [Rus.]
3. Afanasyev, S.A., M.P. Kolesnik, T.V. Davidenko et al. 1991. Sanitary and hydrobiological state of the lakes and bays of the Obolon residential area of Kiev. Pp. 98-109 in: Gidro-ekologicheskiyeproblemy vnutrennikh vodoyemov Ukrainy. (Hydroecological problems of in-land water bodies of Ukraine.) Kiev, Naukova Dumka Press. [Rus.]
4. Glazovskaya, M.A. & N.G. Dobrovolskaya. 1984. Geokhimicheskiye funktsii mikroorganizmov. (Geochemical functions of microorganisms.) Moscow, Moskovskiy Gosudarstvenny Universitet Press. 152 pp. [Rus.]
5. Debeyko, Ye.V., A.K. Ryabov & B.I. Nabivanets. 1973. Direct photometric determination of dissolved proteins in natural waters. Gidrobiol. Zhurn. 9(6): 109-113. [Rus.]