To Zed and back: integrating data flow diagrams and Z. - Ken Robinson; Peter S. Ho; Martin Schwenke (ACSE, 1996)

Informatics: the core and the presentation. - Helen Geissinger; Peter S. Ho; Kenneth Arthur Robinson (Informatics in Higher Education, 1997)

Software engineering or soft engineering? - Ken Robinson; Peter S. Ho (CSEE&T, 2011)