9Cook N. G. W.. Natural joints in rocks: mechanical, hydraulic and seismic behaviour and properties under normal stress[J]. Int. J. Rock Mech. Min. Sci. & Geomech. Abstr, 1992,29(3) : 198-223.
10Tsang Y. W., Witherspoon P. A.. Hydromechanical behaviour of a deformable rock fracture subject to normal stress[J]. Journal of Geophysics Research, 1981,86 :9287-9298.