1. Boyd JL, Shell GL (1972) Dissolved air flotation application to industrial wastewater treatment. In: Proceedings of the 27th Industrial Waste Conference
2. Stander GJ, Van Vuuren LRJ (1970) Flotation of sewage and waste solids. In: Gloyna EF, Eckenfelder WW Jr (eds) Water quality improvement by physical and chemical processes. Univ. of Texas Press, Texas, pp 190–199
3. Metcalf & Eddy, Inc. (1972) Wastewater engineering, collection, treatment, disposal. McGraw—Hill Book Co., New York, pp 296–301
4. Anon (1968) Electrolysis—bred Bubbles Clarify Water, Chemical Engineering, 82–84, 29 July 1968
5. Lemlich R (1972) Adsorptive bubble separation techniques. Academic Press, New York