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Problems of PL/I for system programmingMartin Hopkins1971SIGPLAN Symposium Languages for System Implementation 1971
A Cyclic-Queue Model of System Overhead in Multiprogrammed Computer SystemsP.A. LewisG.S. Shedler1971Journal of the ACM
Probability Models for Buffer Storage Allocation ProblemsDonald P. GaverPeter A. W. Lewis1971Journal of the ACM