1. Babayan, Zh.K., Microbiological Processes in Lake Sevan, Extended Abstract of Cand. Sci. (Biol.) Dissertation, Moscow: Mosk. Gos. Univ., 1984.
2. Bikbulatov, E.S., Gas Chromatographic Method for Determining Nitrites, Byul. IBVV AN SSSR, 1990, no. 89, pp. 87–90.
3. Bikbulatov, E.S., Bikbulatova, E.M., Litvinov, A.S., and Poddubnyi, S.A., Gidrologiya I Gidrokhimiya Oz. Nero (Hydrology and Hydrochemistry of Lake Nero), Rybinsk: OAO Rybinskii Dom Pechati, 2003.
4. Bikbulatov, E.S. and Vereshchagin, V.M., A Simple Reagent for Determining Nitrites in Natural Waters, Okeanologiya, 1979, vol. 6, no. 2, pp. 341–343.
5. Bikbulatov, E.S. and Shcheglov, D.E., Hydrochemical Regime of Lake Pleshcheevo in 1988–1992, Tr. Vseros. Nauch. Konf. (Proc. All-Russia Conf.), Pereslavl’-Zalesskii, 1993, vol. 3, pp. 34–42.