1. Upper bound approach to metal forming processes — To date and in the future;Kudo,1985
2. A review of development and use of upper bound approach to metal forming processes;Kudo,1983
3. Engineering Plasticity;Johnson,1973
4. kuse — A computer program for optimization of proposed upper bound solutions;Keife,1982
5. Automated upper bound procedures for plane strain metal forming analysis;Walker;J. Mater. Shap. Technol.,1989