J van Lier

Treatment of domestic sewage at low temperature in a two-anaerobic step system followed by a trickling filter.

G Lettinga, G Zeeman, G. Zeeman, 2004, Water science and technology : a journal of the International Association on Water Pollution Research.

Decentralised treatment of concentrated sewage at low temperature in a two-step anaerobic system: two upflow-hybrid septic tanks.

G Lettinga, G Zeeman, G. Zeeman, 2003, Water science and technology : a journal of the International Association on Water Pollution Research.