1. Numerical solution of the moisture flow equation for infiltration into layered soils;Hanks,1962
2. One-dimensional infiltration into layered soils;Fok;Journal of the Irrigation and Drainage Division, ASCE,1970
3. Analysis of infiltration into stratified soil columns;Whisler,1969
4. Studies in soil physics. a. The flow of air and water through soils;Green;Journal of Agricultural Science,1911