1. Activated sludge;Adams,1981
2. Standard Methods for the Examination of Water and Wastewater;American Public Health Association,1985
3. Degradation of phenol by polymer entrapped microorganisms;Bettman;Appl. Microbiol. Biotechnol.,1984
4. Biofilms in water and wastewater treatment;Bryers,1990
5. Phenol degradation by microorganisms adsorbed on activated carbon;Ehrhardt;Appl. Microbiol. Biotechnol.,1985