1. J. A. Oleszkiewicz and D. S. Mavinic, Wastewater Biosolids: An Overview of Processing, Treatment and Management, Can. J. Civil Eng., Special Supplemental S1, 28(3), 102–114, (2001).
2. US Filter, Aerobic Digestion-Diffusers, US Filter Envirex Products, Waukesha, WI, Web Site www.envirex.com/products/wastewater/digestion.html (2004).
3. Walker Process Equipment, Aerobic Digestion-Digestion Equipment, Aurora, IL, USA, Web Site www.walker-process.com/product/waste75.html (2000).
4. P. Coackley, Research on sewage sludge carried out in the C. E. Department of University College London, J. Inst. Sewage Purif., 59 (England) (1955).
5. P. Coackley, Laboratory Scale Filtration Experiments and Their Application to Sewage Sludge Dewatering, Biological Treatment of Sewage and Industrial Waste, Vol. 2, Reinhold Publishing Co., NY, p. 287, 1958.