1. World Health Organization, Guidelines for Drinking-Water Quality. Health Criteria and other Supporting Information, vol. 2. World Health Organization, Geneva 1996. 953pp.
2. Maintaining quality without a disinfectant residual;Van der Kooij;J Am Water Works Assoc,1999
3. Van Lieverloo JHM, Van der Kooij D, Hoogenboezem W. Invertebrates and protozoans (free-living) in drinking water distribution systems. Encyclopedia of Environmental Microbiology. In: Bitton G, editor. New York: Wiley; 2002. p. 1718–33.
4. Controlling invertebrates in distribution systems with zero or low disinfectant residual;Van Lieverloo;Water Supply,1998
5. Meheus J, Merckx G. Operational methods of eliminating discoloured water problems. Proceedings of the Water distribution systems: maintenance of water quality and pipeline integrity Conference, Session 3, paper 18. Water Research Centre, Medmenham, 1978. 9pp.