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2. Analysis of air-bubble plumes;Cederwall;California Inst. Tech. Rep. KH-R-24,1970
3. Hold-up and liquid circulation in bubble columns;Freedman;Trans. Inst. Chem. Engrs,1969
4. The hydrodynamics of unconstrained bubble columns for mixing lakes and reservoirs;Goossens;Chem. -Ing. Tech.,1975
5. Reservoir destratification with bubble columns;Goossens,1979