1. Tchobanoglous, G., Burton, F.L., and Stensel, H.D. (2003). Wastewater Engineering (Treatment Disposal Reuse) / Metcalf & Eddy, Inc. (4th ed.). McGraw-Hill Book Company. ISBN 0-07-041878-0 .
2. Water treatment Handbook, Seventh edition, Degremont: France 2007, ISBN 978-1-84585-005-0
3. Twort, A. Ratnayaka, D. Brand J.: Water supply, London IWA Publishing 2000, ISBN 0-340-72018-2