1. Nitrification and denitrification in wastewater treatment;Christensen,1978
2. Hydrogen peroxide as a supplemental oxygen source;Cole;J. Wat. Pollut. Control Fed.,1974
3. Modelling of the activated sludge process and settlers;Dupont;Wat. Res.,1993
4. Performance and control of wastewater treatment plants under transient loading;Harremoës,1993
5. Nitrate versus oxygen utilization rates in wastewater and activated sludge systems;Henze;Wat. Sci. Technol.,1986