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Queuing with preemptive priorities or with breakdown
White, Harrison, (1958)
Optimization of continuous expected value models : a supplement for business statistics and quantitative methods courses
Levine, Kenneth C., (1968)
The probability of an "excessive nonfunctioning interval"
Ellenrieder, A. von, (1966)
On basic-stock level inventory control
Gaver, D. P., (1959)
Renewal-theoretic analysis of a twobin inventory control policy
A waiting line with interrupted service, including priorities
Gaver, D. P., (1962)