6Perfect G,kay B D. Fractal theory applied to soil aggregation[J]. Soil Science and plant, 1991.
7Dani Or, et al. Effect of spatially variable intake on surface Irrigation Advance[M]. Journal of Irrigation and Drainage Engineering, Mar/Apr, 1996.
8Zhou Q Y, Shimada J, Sato A. Three-dimensional spatial and temporal monitoring of water content using electrical resistivity tomography[J]. Water Resour Res, 2001, 37:273-285.
9Archie G E.The electrical resistivity log as an aid in determining some reservoir characteristics[J]. Trans Am Min Metall Pet Eng, 1942, 146:54- 62.
