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* Crites, R. and Tchobanoglous, G. (1998). Small and decentralized wastewater management systems. WCB and McGraw-Hill, New York, USA. (Short overview.)
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* Lettinga, G., Roersma, R. and Grin, P. (1983). Anaerobic Treatment of Raw Domestic Sewage at Ambient Temperatures Using a Granular Bed UASB Reactor Biotechnology and Bioengineering 25 (7): 1701–1723. (The first paper describing the process.)