1. Nitrification design approach for high strength ammonia wastewaters;Adam;J. Water Pollut. Control Fed.,1977
2. Cell free nitrification by Nitrobacter;Aleem;J. Bacteriol.,1958
3. Inhibition of nitrification by ammonia and nitrous acid;Anthonisen;J. Water Pollut. Control Fed.,1976
4. Oxidation of nitrite to nitrate in a soil column;Ardakani,1973
5. Oxidation of ammonium to nitrate in a soil column;Ardakani,1974