1. An improved form of soil-water diffusivity function;Ahuja,1972
2. Similarity for the nonlinear diffusion equation;Ames;Ind. Eng. Chem. Fundam.,1965
3. Hydraulic properties of porous media;Brooks;Colorado State Univ., Fort Collins, Colo. Hydrol. Pap.,1964
4. Conduction of Heat in Solids;Carslaw,1959
5. The Mathematics of Diffusion;Crank,1956