1. and , Structured Programming, Academic Press, London, 1972.
2. FR80 DRIVER Software Construction, Atlas Computer Laboratory, Oxon, 1975.
3. and , FR80 Logging System, Atlas Computer Laboratory, Oxon, 1975.
4. et al., ‘IF-THEN-ELSE considered harmful’, SIGPLAN Notion, 34–43 (1975).
5. A control statement for natural top-down structured programming