1. Plastic instability under plane stress;Swift;J. Mech. Phys. Solid,1952
2. Plastic instability and fracture in sheets stretched over rigid punches;Keeler;Trans. ASM,1963
3. The deformation and failure of a baixiality stretched sheet;Azrin;Met. Trans.,1970
4. Some comments on the limit strains in sheet metal stretching;Tador;Int. J. Mach. Sci.,1975
5. Investigation of the forming limits in the process of sheet metal stretching;Al-Qureshi,2000