1. Oxygen activated sludge considerations for industrial applications;Adams;AIChE Symposium series,1978
2. Optimization: theory and practice;Beveridge,1970
3. A new method of constrained optimization and a comparison with other methods;Box;Computer J.,1965
4. Adaptive control and identification of the dissolved oxygen process;Goodwin;Automatica,1982
5. Microprocessor based estimation of oxygen utilization in the activated sludge process;Holmberg;International Journal of Systems Science,1981