1- Adams, C.E., Eckenfelder, W.W., and Stein, R.M. (1974). “Modifications to aerobic digestor design.” Water Research, 8 (4), 213-218.
2- Krishnamoorthy, R., and Loehr, R.C. (1989). “Aerobic sludge stabilization-factors affecting kinetics.” J. of Environmental Engineering, 115(2), 283-301.
3- Lawrence, A.W., and McCarty, P.L. (1970). “Unified basis for biological treatment design and operation.” J. of Sanitary Engineering Division, 96, 757-778.
4- Goodman, B. L., and Englande, Jr., A.J. (1974). “A unified model of the activated sludge process.” J. Water Pollution Control Federation, 46(2), 312-332.
5- Henze, M., Gujer, W., Mino, T., and Van Loosdrecht, M. (2002). Activated sludge models ASM1, ASM2, ASM2d and ASM3, IWA Scientific and Technical Report, No. 9, IWA, London.
6- Tchobanoglous, G., and Burton, F. (2003). Wastewater engineering: Treatment and reuse, 4th Ed., McGraw- Hill, Metcalf and Eddy Inc., Toronto.
7- Henze, M., Grady, C.P.L., Gujer, W., Marais, G. V. R., and Matsuo, T. (1987). “A general model for single-sludge wastewater treatment systems.” Water Research, 21(5), 505-515.
8- Gujer, W., Henze, M., Mino, T., and Van Loosdrecht, M. (1999). “Activated sludge model No. 3.” Water Science and Technology, 39(1), 183-193.
9- APHA, AWWA, WEF. (1998). Standard methods for the examination of water and wastewater, 20th Ed., American Public Health Association, American Water Works Association, Water Environment Federation, Washington D.C., USA.
10- Reichert, P. (1998). AQUASIM 2.0: Computer program for the identification and simulation of aquatic system, Swiss Federal Institude for Environmental Science and Technology, Dubendorf, Switzerland.
11- Weijers, S.R., and Vanrolleghem, P.A. (1997). “A procedure for selecting best identifiable parameters in calibrating activated sludge model No. 1 to full scale plant data” Water Science and Technology, 36(5), 69-79.
12- Koch, G., Kuhni, M., Gujer, W., and Siegrist, H. (2000). “Calibration and validation of activated sludge model No. 3 for Swiss municipal wastewater.” Water Research, 34(14), 3580-3590.
13- Iacopozzi, I., Innocenti, V., Marsili-Libelli, S., and Giusti, E. (2007). “Modified activated sludge model No. 3 (ASM3) with two-step nitrification-denitrification.” Environmental Modeling and Software, 22, 847-861.
14- Shahriari, H. (2003). “Evaluation and modeling of a membrane activated sludge system.” M.Sc. Thesis, Department of Civil Engineering, University of Ottawa, Canada.
15- Dold, P.L., and Marais, G.V.R. (1986). “Evaluation of the general activated sludge model proposed by the IAWPRC Task Group.” Water Science and Technology, 18, 63-89.
16- Jeppsson, U. (1997). A general description of the IAWQ activated sludge model No. 1, Dept. of Industrial Electrical Engineering and Automation, Lund, Sweden.