8Gavin K, Xue JA. simple method to analyze infiltration into unsaturated soil slopes[J]. Computers and Geotechnics, 2008, 35 (2) :223 -230.
9Ma Y, Feng S, Su D. ,et al.. Modeling water infiltration in a large layered soil column with a modified Green - Ampt model and HYDRUS - 1 D [ J ]. Computers and Electronics in Agriculture, 2010, 71:40 ~47.
10Prince George' s County. Low-impact Development De- sign Strategies: An Integrated Design Approach [ M ]. Maryland : Department of Environmental Resources, Pro- grams and Planning Division, Prince George ' s County,1999.