Response to the comment on "Wet oxidation lumped kinetic model for wastewater organic burden biodegradability prediction"Verenich, Svetlana; Kallas, JuhaEnvironmental science and technology2003 / 6, p. 1227 Sorption and desorption of Cd2+ and Zn2+ ions in apatite-aqueous systemsPeld, Merike; Tõnsuaadu, Kaia; Bender, VillemEnvironmental science and technology2004 / 21, p. 5626-5631 : ill