1. Standard Methods for the Examination of Water and Wastewaters;American Public Health Association,1971
2. Use of algae in removing phosphorus from sewage;Bogan;J. Sanit. Engng Div., ASCE,1960
3. Biological extraction of nutrients;Borchardt;J. Wat. Pollut. Control Fed.,1968
4. A dynamic model of the phytoplankton population in the Sacramento-San Joaquin Delta;DiToro,1971
5. Algal-bacterial symbiosis for removal and conservation of wastewater nutrients;Humenik;J. Wat. Pollut. Control Fed.,1971