1. Upper-bound solutions of axisymmetric forming problems I, II;Kobayashi;ASME J. Engng Ind.,1964
2. Analysis of combined backward-forward extrusion;Avitzur;ASME J. Engng Ind.,1964
3. Forging analysis–a new approach;McDermott,1974
4. UBET related developments in forging analysis;Cramphorn,1976
5. An approximate method for predicting metal flow in forging and extrusion operation;Thornton,1980