1. Compendium of Methods for Microbiological Examination of Foods;American Public Health Association,1976
2. Standard Methods for the Examination of Water and Wastewater;American Public Health Association, American Waterworks Association and Water Pollution Control Federation,1980
3. Official Methods of Analysis;Association of Official Analytical Chemists,1975
4. Determination of the lethal activity of chlorine and ozone on E. coli;Bringman;Z. Hyg. Infektionskr.,1954
5. Ozonation-diatomite filtration removes color and turbidity, Part 1;Bryant;Water Sewage Works,1977