1. Chemical-biological control of nitrogen and phosphorus in wastewater effluent;Barth;J. Wat. Pollut. Control. Fed,1968
2. Process optimisation for simultaneous biological nitrification and phosphorus removal;Bliss;Wat. Sci. Technol.,1994
3. Phosphate removal techniques and fuzzy logic;Bulgin;Wat. Wastewat. Treat.,1994
4. Simultaneous precipitation of phosphorus, BOD removal, nitrification and denitrification in full scale practise;Bundegaard;Prog. Wat. Technol.,1978
5. Nutrient removal-methods of meeting the EC urban wastewater directive;Cooper,1993