1. WHO, Guidelines for drinking water quality. Vol. I, Recommendations. World Health Organization, Geneva, 1984.
2. Batchelor B. Autotrophic denitrification using sulfur electron donors. PhD Thesis, Cornell University, 1976.
3. Autotrophic denitrification using elemental sulfur;Batchelor;J Water Pollut Control Fed,1978
4. The use of sulfur and sulfide in packed bed reactors for autotrophic denitrification;Driscoll;J Water Pollut Control Fed,1978
5. Autotrophic denitrification using elemental sulfur;Hashimoto;J Ferment Technol,1987