1. Microbiological and Operational Investigation of Relative Effects of Skimming and in Situ Sand Washing on Two Experimental Slow Sand Filters;Burman;Jour. Inst. Water Engrs.,1961
2. Bacteriological Control of Slow Sand Filtration;Burman;Effluent & Water Trtmt. Jour.,1962
3. Silverman , G.P. Slow Sand Filtration of Giardia lamblia Cysts and Other Substances Phase I Rept. for EPA Cooperative Agreement CR808650-02 with Colorado State University 1983