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2. and , ‘Interactive programming languages adapted for instructional use of computers’, Int. Symp. Man-Machine Systems, Cambridge, 1969.
3. and , Kent On-Line System: Compiler for a Subset of Dartmouth Basic, Document KUSE/BASIC, Computing Laboratory, University of Kent at Canterbury, 1969.
4. ML/I User's Manual, Appendix G: KOS Version of ML/I for the ICL 4130, Computing Laboratory, University of Kent at Canterbury, 1969.