1. Identification of filamentous organisms in nutrient removal activated sludge plants in South Africa;Blackbeard;Wat. SA,1988
2. A hypothesis for the cause of low F/M filament bulking in nutrient removal activated sludge systems;Casey;Rapid Commun. Wat. Res.,1992
3. Filamentous bulking in nutrient removal activated sludge systems;Wanner;Wat. Sci. Technol.,1988
4. Sludge bulking in nutrient removal systems;Wentzel;IAWQ Newslett.,1992
5. Single sludge nitrogen removal in an oxidation ditch;Argaman;Wat. Res.,1984