1. Extrusion : Processes, Machinery and Tooling;Lauer,1976
2. Computer Aided Design in Metal Forming Systems;Boer;Annals of the CIRP,1984
3. An Incremental Analytical Technique for Forging and Extrusion of Metals;Osman,1982
4. Complex Simulation System of Forgin Based on UBET;Kiuchi;Annals of the CIRP,1986
5. Simulation of Contact Pressure Distribution on Tool Surface by UBET;Kiuchi,1980