Brutsaert, W.(1966) Probability laws for pore-size distributions.Soil Sci. 101 : 85-92.
Chen, Z. Q., Kavas, M. L., and Govindaraju, R. S.(1993) Upscalingof Richards equation for soil moisture dynamics to be utilized in mesoscale atmospheric model. IAHS Publ, No. 212, IAHS, Wallingford, 125-132.