1. Small lot stamping production by progressive unit dies;Nakagawa;Ann. CIRP,1993
2. I. Takahashi, M. Anzai, T. Nakagawa, E. Kawashima, T. Matsuoka, High Speed Milling of Cast Iron, Proceedings of the Third International Conference on Die and Mold Technology'95 Taipei, 1995, pp. 353–363
3. T. Nakagawa, K. Suzuki, K. Sakaue, Bulletin of the Japan Society of Precision Engineering, 17 (1) (1983) p. 45
4. Manufacturing of laminated deep drawing dies by laser beam cutting;Kunieda;Adv. Technol. Plasticity,1984
5. T. Nakagawa, M. Toda, K. Hokao, Experimental manufacturing of auto-body panel forming tool by laser cut steel sheet laminating, `97 2nd Proceeding of the LANE, 1997, pp. 31–44