1. Inhibition of nitrification by ammonia and nitrous acid;Anthonisen;J. WPCF.,1976
2. APHA, AWWA and WPCF (1985) Standard Methods for the Examination of Water and Wastewater, 16th edn., pp. 96–98 and 537–538. American Public Health Association, Washington DC, U.S.A
3. EPA (1975) Environmental Protection Agency. Process Design Manual for Nitrogen Control. Cincinnati, OH, Centre for Environmental Research EPA-625/1-75-007
4. Forgie D. J. L. (1988) Development of a Leachate Treatment Selection Model. ASCE Environ. Eng. Natl. Conf, pp. 875--882
5. Identification of organic compounds in leachate from a waste tip;Harmsen;Wat. Res.,1983