1. The effect of the anoxic zone on sludge production and settleability in the activated sludge process;Arkley,1981
2. Carbon flow patterns in enhanced biological phosphorus accumulating activated sludge cultures;Bordacs;Wat. Sci. Technol.,1989
3. Retention of organic storage products in anaerobic-aerobic activated sludge;Bordacs,1988
4. Biological phosphorus removal in short sludge age activated sludge processes;Burke,1986
5. A general activated sludge model incorporating biological excess phosphorus removal;Dold,1990