1. Elsevier's Dictionary of the Printing and Allied Industries;Wijnekus,1983
2. Dictionary of the Graphic Arts Industry;Müller,1981
3. S.M. Chou, M. Cher, TAGA Proc. (1989) 257.
4. S.M. Chou, T.A. Fadner, L.J. Bain, TAGA Proc. (1990) 280.
5. S.M. Chou, TAGA Proc. (1992) 388.