1. Standard methods for the examination of water and wastewater;American Public Health Association,1971
2. Use of algae in removing phosphorus from sewage;Bogan;J. sanit. Engng Div., Am. Soc. civ. Engrs.,1960
3. Removal of nitrogen from the drainage—A summary report;Brown,1971
4. Removal of nitrate by an algal system;Brown,1971
5. Dissolved solids removal from waste water by algae;Bush;J. sanit. Engng Div., Am. Soc. civ. Engrs.,1961