1. Theory of Fluid Flow Through Natural Rocks;Barenblatt,1990
2. Dynamics of Fluids in Porous Media;Bear,1972
3. Exact solutions for vertical drainage and redistribution in soils;Broadbridge;J. Eng. Math.,1990
4. The Nonlinear Diffusion Equation;Burgers,1974
5. Conduction of Heat in Solids;Carslaw,1959