Chemical oxidation of biologically treated phenolic effluentsKamenev, Sven; Kallas, Juha; Munter, Rein; Trapido, MarinaWaste management1995 / 3, p. 203-208: ill Wet oxidation of concentrated wastewaters of paper mills for water cycle closingVerenich, Svetlana; Laari, A.; Kallas, JuhaWaste management2000 / p. 287-293 : ill