A New Technique in Automatic Character Recognition. - M. B. Clowes; J. R. Parks (Comput. J., 1961)

Letter Recognition and the Segmentation of Running Text - D. O. Clayden; M. B. Clowes; J. R. Parks (Inf. Control., 1966)

Applications of a Low Cost Graphical Input Tablet. - P. J. Pobgee; J. R. Parks (IFIP Congress (1), 1971)