8ZHU S,WANG Y M,FENG S R.Comparison and study on constitutive models for corse grain materials under different stress path. Proceedings of the 12nd ASCE Aerospace Division International Conference . 2010
9Duncan JM,Chang CY.Nonlinear analysis of stress and strain in soils. Jounrnal of The Soil Mechanics and Foundation Division, ASCE . 1970