3Han D M, Xu H L , Liang X. GIS-based regionalization of a karst water system in Xishan Mountain area of Taiyuan Basin, north China[J]. Journal of Hydrology, 2006,31(3 - 4) : 459 - 470.
4Toth J. Cross-formational gravity-flow of groundwater, A mechanism of the transport and accumutation of petroleum (The generalized hydraulic theory of petroleum migration) [ M ]. Problems of Petroleum Migration, 1980 : 121 - 167.