Rao S,Allam K S,Mand M.Discussion on a Dual Interface Aratusfor Testing Unrestricted Friction of Soil Along Solid Surface[J].Geotechnical Testing Journal,1996,19(4):446-451.
Clough G W,Duncan J M.Finite Element Analysis of RetainingWall Behavior[J].Journal of the Soil Mechanics and FoundationsDivision,1971,97(SM12),1657-1672.