1. D.A. Smith (1990) Die Design Handbook. Society of Manufacturing Engineers, Dearborn, MI, p 41–47
2. L.K. Gillespie (1999) Deburring and Edgefinishing Handbook, Society of Manufacturing Engineers, Dearborn, MI
3. K. Shibata, “Clearance Setting Method in Punching Shear Work,” Patent 61-46329, Japan, 1986
4. A. Wanibuchi, “Work Punching Method,” Patent 59-66934, Japan, 1984
5. S.F. Golovashchenko, Numerical and experimental analysis of the trimming process, Proceedings of NUMISHEET’99, Besanson, France, 1999, p 621–627