8Sheorey P R, Loui J P, Singb K B, etal. Ground subsidence observations and a modified influencefunction method for complete subsidence prediction[ J]. International Journal Rock Mechanics and Mining Sciences,2000,37:801 - 808.
9Sheorey P R. A theory for in situ stresses in isotropic and transversely isotropic Ground[ J] Int J Rock Mech Min Sci Geomech Abst, 1994, 31:23 -34.