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2. Wang ZR, Li SD, Liu LJ (1982) On division of stress on the yield locus and correspondence between the regions on the yield locus and the size variation of workpieces during metal forming. Acta Metall Sin 18(4):433–438
3. Wang ZR (1980) The rules of correspondence between strain and stress order and its application in metal forming process of plane stress. J Harbin Inst Technol 3:56–61
4. Wang ZR, He YX (1993) The present situation of forging and stamping techniques in China, advanced technology of plasticity-Proc. 4th ICTP, International Academic Publishers: 3–10
5. Wang ZR (1994) Comprehensive analysis of stress–strain in typical metal forming processes. J Harbin Inst Technol 2:62–66