Andrews, J.F.1977. 'Specific oxygen utilisation rate for control of activated sludge process',Prog Wat Tech, 8 (6).
2.
Andrews, J.F., Stenstrom, M.K. and Buhr, H.O.1976. 'Control systems for reduction of effluent variability from the activated sludge process', Prog Wat Tech, 8 (1).
3.
Box, M.J.1965. 'A new method of constrained optimisation and a comparison with other methods', Computer J, 8.
4.
Camp, T.R.1955. 'Flocculation and flocculation basins', TransASCE, 120 (1).
5.
Evans, F.L.1979. Summary of national operational and maintenance cause and effect survey, US EPA Tech Trans.
6.
Garrett, M.T.1958. 'Hydraulic control of activated sludge growth rate', Sew and Ind Wastes, 30 (3).
7.
Jenkins, D. and Garrison, W.E.1968. 'Control of activated sludge by mean cell residence time' , JWPCF, 40 (11).
8.
Keuster, J.O. and Mize, J.H.1973. Optimization techniques with Fortran, McGraw-Hill, New York. Lawrence, A.W. and McCarty, P.L.1970. 'A unified basis for biological treatment design and operation', J Sanit Eng Div ASCE, 96 (2).
9.
Murphy, K.L.1971. 'Significance of flow patterns and mixing in biological waste treatment, Biotech and Bioeng Symp No 2, John Wiley and Sons, New York.
10.
Olsson, G.1976a. 'State-of-the-art in sewage treatment plant control', AIChE Symp Series, 159, New York.
11.
Olsson, G.1976b. 'Activated sludge dynamics static analysis', Rep 7612(c), Lund Inst Dept of Aut Control.
12.
Richalet, J., Rault, A., Testudy, J.L. and Papon, J.1978. 'Model predictive heuristic control application to industrial processes', Autornatica, 14.
13.
Sorensen, P.E.1980. 'Evaluation of operational benefits to the activated sludge process using step feed control strategies', Prog Wat Tech , 12.
14.
Stenstrom, M.K. and Andrews, J.F.1979. 'Real time control of the activated sludge process', ASCE Env Eng Div, 105 (EE2).
15.
Stephenson, J.P., Monagan, B.A. and Laughton, P.J.1981b. 'Automatic control of solids retention time and dissolved oxygen in the activated sludge process', Wat Sci Tech, 13.
16.
Stephenson, J.P., Luxon, E.G., Monaghan, B.A. and Gillespie, R.G.1981a. 'Evaluation of instruments for continuous activated sludge monitoring'. Wat Sci Tech, 13, Munich.
17.
Yust, L.J.1981. 'Dynamic real time control of the activated sludge process using step feed', M Eng Thesis, McMaster Univ, Hamilton, Ont, Canada.
18.
Yust, L.J., Stephenson, J.P. and Murphy, K.L.1981. 'Dynamic step feed control for organic removal in a suspended growth system', Wat Sci Tech, 13, Munich.
