1. Dynamics of Fluids in Porous Media;Bear,1972
2. Seepage, Drainage and Flow Nets;Cedergren,1967
3. Groundwater and Seepage;Harr,1962
4. The Flow of Homogeneous Fluids Through Porous Media;Muskat,1937
5. Theory of Ground Water Movement;Polubarinova-Kochina,1962