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2. Behzadi, M.A., (1989) True digital control of greenhouse systems, PhD Thesis, Univ. of Lancaster.
3. Longitudinal dispersion in natural streams;Beer;American Society of Civil Engineers Journal of Environmental Engineering,1983
4. Chotai, A., P.C. Young and W. Tych (1990). A non–minimum state space approach to true digital control based on the backward shift and delta operator models, appears in M.H. Hamza (ed.) Proc. IASTED Conference, Acta press, Calgary, 1–4.
5. Self–adaptive and self–tuning control of a Nutrient Film Technique (NFT) system;Chotai,1991