1. Methods for the Examination of Water and Wastewater;APHA Standard,2012
2. Special Compact Activated Sludge Wastewater Treatment Plant for Large and Medium Size Applications;Bellos,2012
3. Effect of carbon to nitrogen ratio on the composition of microbial extracellular polymers in activated sludge;Durmaz;Water Sci. Technol.,2001
4. Integrated Pollution Prevention and Control: Reference Document on Best Available Techniques in the Slaughterhouses and Animal By-Products Industries;European Commission,2005
5. Sludge Reduction Technologies in Wastewater Treatment Plants;Foladori,2010