1. A.Y.C. Nee, PC-based computer aids in sheet-metal working, J. Mech. Work. Technol. 19 (1989) 11–21.
2. P.B. Schubert, Die methods: Design, fabrication, maintenance, and application. Book One, Industrial Press, New York, 1966.
3. P.B. Schubert, Die methods: Design, fabrication, maintenance, and application. Book Two, Industrial Press, New York, 1966.
4. D.E. Ostergaard, Basic Diemaking, McGraw-Hill, New York, 1963.
5. D.E. Ostergaard, Advanced Diemaking, McGraw-Hill, New York, 1967.