[1] Zart D ,Bock E. High rate of aerobic nitrification and denitrification by Nitrosomonas eutropha grown in a fermentor with complete biomass retention in the presence of gaseous NO2 or NO[J ] . Arch Microbiol, 1998, 169:282 - 286. [2] Schmidt I ,Zart D ,Bock E. Gaseous NO2 as a regulator for ammonia oxidation of Nitrosomonas eutropha [J] . Antonie van Leeuwenhoek ,2001 ,79 :311 - 318. Zart D, Schmidt I, Bock E. Significance of gases NO for ammonia oxidation by Nitrosomonas eutropha [J]. Antonie Leeuwenhoek, 2000, 77(1):49-55. [ 3] Zart D ,Schmidt I ,Bock E. Significance of gaseous NO for ammonia oxidation by Nitrosomonas eutropha [J]. Antonie van Leeuwenhoek ,2001 ,77 :49 - 55.