1. S.A. Majlessi and D. Lee:Proc. North American Manufacturing Research Conference (NAMRC), Manufacturing Technology Review, Lehigh, PA, Society of Manufacturing Engineers, Dearborn, MI, 1987, vol. 2, pp. 330–34.
2. D. Lee, J. Amoedo, G. Jung, and J.H. Vogel:Proc. of the 14th Conference on Production Research and Technology, Manufacturing Processes, Machines and Systems, Ann Arbor, MI, Society of Manufacturing Engineers, Dearborn, MI, 1987, pp. 433–39.
3. E. Doege: inComputer Modelling of Sheet Forming Process-Theory Verification, and Application, N.M. Wang and S.C. Tang, eds., TMS-AIME, Warrendale, PA, 1986, pp. 209–224.
4. J.O. Kumpulainen, A.J. Ranta-Eskola, and R.H.O. Rintamaa:Trans. ASME, J. Eng. Mater. Technol., 1983, vol. 105, pp. 119–27.
5. A.W. Swift:Engineering, 1948, vol. 166, pp. 333–35 and 357–59.