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An M/G/1 queue with additional second stage service and optional re-service. (English) Zbl 1019.60088

The paper studies an M/G/1 queue with additional second stage service and optional re-service. Both stages of service have general distributions. The customer can avail the re-service on any stage. Expressions for the average queue size, the average system size and the average waiting time are obtained in closed forms.

MSC:

60K25 Queueing theory (aspects of probability theory)
90B22 Queues and service in operations research
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