| African
        Journals Online | 
| The use of simultaneous chemical precipitation in modified activated sludge systems exhibiting biological excess phosphate removal: Part 5: Experimental periods using a ferrous-ferric chloride blend | 117 | 
| De Haas, D.W.; Wentzel, M.C.; Ekama, G.A. | |
| The use of simultaneous chemical precipitation in modified activated sludge systems exhibiting biological excess phosphate removal: Part 6: Modelling of simultaneous chemical-biological P removal - review of existing models | 135 | 
| De Haas, D.W.; Wentzel, M.C.; Ekama, G.A. | |
| The use of simultaneous chemical precipitation in modified activated sludge systems exhibiting biological excess phosphate removal: Part 7: Application of the IAWQ model | 151 | 
| De Haas, D.W.; Wentzel, M.C.; Ekama, G.A. | |
| The application of different techniques to determine activated sludge kinetic parameters in a food industry wastewater | 169 |