1. Pakhomov, A.N., Danilovich, D.A., and Kozlov, M.N., Voda Ekol.: Probl. Resheniya, 2004, no. 2, p. 70.
2. Karmazinov, F.V. and Probirskii, M.D., Vodosnabzh. Sanit. Tekhn., 2001, no. 8, p. 2.
3. Glebov, G.A. and Martynov, E.V., Energosberezhenie v khimicheskoi tekhnologii (Energy Saving in Chemical Technology), Kazan: Izd. KGTU, 2000, p. 42.
4. Sokolova, T.A., Ratsional’noe prirodopol’zovanie v usloviyakh tekhnogeneza (Nature Conservation under Conditions of Technogenesis), Moscow: Papirus PRO, 2000.
5. Paenk, T., Vodosnabzh. Sanit. Tekhn., 2003, no. 1, p. 37.