1. Standard Methods for the Examination of Water and Wastewater;APHA,1985
2. Elements of Water Supply and Wastewater Disposal;Fair,1971
3. Mechanism of inactivation of new indicators by free available chlorine;Haas,1978
4. Physiological alterations of vegetative mocroorganisms resulting from chlorination;Haas;J. Wat. Pollut. Control. Fed.,1980
5. Protein measurement with the folin phenol reagent;Lowry;J. biol. Chem.,1951