1. Microbial biofilms;Costerton;Annu. Rev. Microbial.,1995
2. Nitrate removal from drinking water-review;Kapoor;J. Environ. Eng.,1997
3. Levich V. G. (1962) Physicochemical Hydrodynamics. Prentice-Hall, Englewood, NJ
4. Mansell B. O. (1997) Biological denitrification in a continuous flow membrane reactor. M.S. thesis, University of California, Davis
5. Biological water denitrification — a review;Mateju;Enzyme Microb. Technol.,1992