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References
- Notes
- ↑ Lavington 1980 , pp. 50–52
- ↑ Brinch Hansen 2000
- Bibliography
- Lavington, Simon (1980), Early British Computers, Manchester University Press, ISBN 0-7190-0803-4
- Brinch Hansen, Per (2000), Classic Operating Systems: From Batch Processing to Distributed Systems, Springer-Verlag
