1. APHA, 1998. Standard Methods for the Examination of Water and Wastewater, 20th ed. American Public Health Association, American Water Works Association, Water Environment Federation, Washington D.C., USA.
2. Recalcitrant organic compounds (chemical oxygen demand sources) in biologically treated pulp and paper mill effluents: their fate and environmental impact in receiving waters;Archibald;Water Environ. Res.,1998
3. Department of the Environment, 1988. 5-Day BOD (BOD5) test and dissolved oxygen in water, second ed. Methods for the Examination of Waters and Associated Materials, HMSO, London.
4. Technical Guidance on Composting Operations (Draft). Version 3.0;Environment Agency,2001
5. Potential nitrification and cation exchange on litter of emergent, freshwater macrophytes;Eriksson;Freshwater Biol.,1999