An Icon-Driven End-User Interface to UNIX. - D. T. Gittins; Russel L. Winder; H. E. Bez (Int. J. Man Mach. Stud., 1984)

On Methods for Interfaces Specification and Design. - J. N. J. Richards; H. E. Bez; D. T. Gittins; D. John Cooke (Int. J. Man Mach. Stud., 1986)