1. (1) Hesse, F. and Tenzer, H. J.: Grundlargen der Papierverarbeitung, VEB Verlag fur Buch und Bibliothekswesen, (1963), pp. 58-60, Leipzig.
2. (2) Inaba, Y., Flatbed Diecutting and Maintenance of Diecutter (DSJ '98 Seminar text), CARTON BOX, Vol. 17, No. 200 (1998), pp. 17-20