1. Plastic instability and fracture in sheets stretched over rigid punches;Keeler;Trans. ASM,1963
2. Application of strain analysis to sheet metal forming problems in the press shop. SAE Technical Paper, Paper No. 680093;Goodwin,1968
3. A simple forming limit curve technique and results on aluminum alloys, sheet metal forming and formability;Hecker,1972
4. Limit strains in the processes of stretch-forming sheet metal;Marciniak;Int. J. Mech. Sci.,1967
5. Plastic instability under plane stress;Swift;J. Mech. Phys. Solids,1952