1. A. Guidi: Technica Vol. 19, 20, 21 (1962), pp.1371-1375, 1499-1504, 1599-1602.
2. T. Maeda and T. Nakagawa: Scientific Papers of the Institute of Physical and Chemical Research Vol. 62 (1968), 65-80.
3. Fine-blanking Technical Review (Information) Vol. 8-32 (Feintool AG Lyss, Switzerland).
4. J. Haack and F. Birzer: Fine Blanking Practical Handbook (Feintool AG Lyss, Switzerland 1984).
5. T.C. Lee and L.C. Chan: Proceedings of the Asian Industrial Technology Congress '93 - Precision Engineering (Hong Kong) (1993), pp.72-76.