1. Texture hardening;Backofen;ASM Trans. Quart.,1962
2. Anisotropy of sheet metal;Banabic,2000
3. Perturbation Bounds for Matrix Eigenvalues;Bhatia,1987
4. Topology and Geometry;Bredon,1993
5. Differential Geometry of Curves and Surfaces;do Carmo,1976