1. Characterization of Chemical Sludges;Novak;Jour. AWWA,1973
2. Water Pollution Control Federation,1983
3. Particle-size Analysis and Analyzers;Lapple;Chem. Engrg.,1968
4. Influence of Particle Size on Sludge Dewaterability;Karr;Jour. WPCF,1978
5. Effects of Coagulation on Sludge Thickening and Dewatering;Knocke;Jour. AWWA,1987