8Shen Z J. Advances in numerical modeling of deformation behaviors of un saturated soils [A]. Proc. 2nd Int. Conf. Unsaturated Soils [C]. Beijing, 1998, Ⅱ , 180 - 193.
9Shen Z J, Hu Z Q. Damage function and a masonry model for loess [A]. Asian Conf. Unsaturated soils [C]. Singapore, 2000, 245- 249.
10Kawamoto K, Miyazaki T. Finger flow in homogeneous sandy soils under continous rainfall infiltration [J]. Soils & Foundations, 1999, 39(4): 79-91.