1. Bitton G.,Wastewater Microbiology, 3rd edition, Chapter 8. Activated Sludge Process
2. Henze M., Gujer W., Mino T., van Loosdrecht M.,IWA Scientific and Technical Report No. 9,IWA Publishing. London, UK (2000)
3. Copp J. B., Office for Official Publications of the European Community, Luxembourg. ISBN 92-894-1658-0
4. Understanding some of the differences between the COD- and BOD-based models offered in STOAT
5. An integrated metabolic model for the aerobic and denitrifying biological phosphorus removal