1. S.P. Keeler and W.A. Backhofen, Plastic Instability and Fracture in Sheet Stretched over Rigid Punches, ASM Trans. Q., 1964, 56, p 25–48
2. G.M. Goodwin, Application of Strain Analysis to Sheet Metal Forming in the Press Shop, SAE Paper 680093, 1968
3. Z. Marciniak and J.L. Duncan, The Mechanics of Sheet Metal Forming, Edward Arnold, London, 1992
4. S.P. Keeler and W.G. Brazier, Relationship Between Laboratory Material Characterization and Press Shop Formability, Microalloying 75 Proceedings, Washington, DC, 1977, p 517–528.
5. M.F. Shi, Strain hardening and forming limits of automotive steels. SAE Paper Number 950700, 1995.