1. Settling velocity model of activated sludge;Choa;Water Res,1993
2. Ueber kapillare Leitung des Wassers im Boden;Kozeny;Stizungsber Akad Wiss Wien,1927
3. Fluid flow through granular beds;Carman;Trans Inst Chem Eng,1937
4. Permeability of saturated sands, soils and clays;Carman;J Agric Sci,1939
5. Flow of gases through porous media;Carman,1956