1. Orbegozo, J.I., Ann. CIRP, 1968, vol. 16, p. 319.
2. Perlin, I.L. and Ermanok, M.Z., Teoriya volocheniya (Theory of Drawing), Moscow: Metallurgiya, 1971.
3. Avitzur, B., Trans. ASME. J. Eng. Ind., 1968, vol. 90(1), p. 79.
4. Avitzur, B., Handbook of Metal Forming Processes, New-York: Wiley, 1983.
5. Nakagiri, A., Yamamoto, T., Konaka, M., et al., Proc. Conf. WAI Annu. Convention, Nashville, 2000, p. 75.