1. Steiggeschwindigkeit von Luftblasen in Flüssigkeiten;Bryn;Forsch. Geb. Ingenieurw.,1933
2. On bubbles rising in line at large Reynolds numbers;Harper;J. Fluid Mech.,1970
3. Growing bubbles rising in line;Harper;J. Appl. Math. Decision Sciences,2001
4. A simple equation of state for hard discs;Henderson;Mol. Phys.,1975
5. Kirk-Othmer Encyclopedia of Chemical Technology,1998