References
- Chua , H. and Le , K. Y. 1994 . A Survey of Filamentous Foaming in Activated Sludge Plants in Hong Kong . Water Science and Technology , 30 ( 11 ) : 251 – 254 . [CSA]
- Jenkins , D. , Richard , M. G. and Daigger , G. T. 1993 . Manual on the Causes and Control of Activated Sludge Bulking and Foaming, , 2nd Edition , Boca Raton, FL : Lewis Publishers, Inc. .
- Drainage Services Department, Hong Kong Special Administrative Region Government . 2005 . Biological Foaming Control Study Research and Development Report Number RD 2022, (Internal Report)