1. Andersson, S., 2009. Characterization of Bacterial Biofilms for Wastewater Treatment. Doctor Thesis. Royal Institute of Technology, Sweden, pp. 33–36.
2. Standard Methods for the Examination of Water and Wastewater;APHA,2005
3. Asiedu, K., 2001. Evaluating Biological Treatment Systems. Master Thesis. Virginia Polytechnic Institute and State University, USA, pp. 18–23.
4. Biological drinking water treatment processes, with special reference to mutagenicity;Carraro;Water Res.,2000
5. Isolation of soil bacteria able to hydrolyze both organophosphate and carbamate pesticides;Chanika;Bioresour. Technol.,2011