1. An upper bound approach to plane strain forging and extrusion;Kudo;Int. J. mech. Sci.,1960
2. An upper bound approach to plane strain forging and extrusion;Kudo;Int. J. mech. Sci.,1960
3. Some theoretical results of plane strain compression of a square compressed between flats and as diamond;Johnson,1967
4. Metal Forming: Processes and Analysis;Avitzur,1968
5. Flat Tool Forging;Lahoti,1974