1. Sheet metal formability and test methods - part 1: formability and indexes,2008
2. Plastic instability and fracture in sheets stretched over rigid punches;Keeler;ASM Trans,1961
3. Application of strain analysis to sheet metal forming problems in the press shop;Goodwin;SAE Trans,1968
4. Plastic instability under plane stress;Swift;J Mech Phys Solids,1952
5. On discontinuous plastic states, with special reference to localized necking in thin sheets;Hill;J Mech Phys Solids,1952