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- [6] State of development of closed-die cold-forging processes Soviet Forging and Sheet Metal Stamping Technology (English Translation of Kuznechno-Shtampovochnoe Proizvodstvo), 1987, (06): : 11 - 16
- [7] CLOSED-DIE FORGING OF COLLECT BLANKS MACHINERY AND PRODUCTION ENGINEERING, 1969, 114 (2943): : 575 - &
- [9] DEVELOPMENT PROSPECTS FOR OPEN AND CLOSED-DIE HOT-FORGING SOVIET ENGINEERING RESEARCH, 1981, 1 (11): : 31 - 32