Activated sludge model no.1

Henze M, Grady CPL, Gujer W, Marais Gv.R & Matsuo T
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Henze, M., Grady, C. P. L., Gujer, W., Marais, Gv.R., & Matsuo, T. (1987). Activated sludge model no.1 (Scientific and technical reports). London: IAWPRC.