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The $$M/M/c$$ retrial queue with geometric loss and feedback. (English) Zbl 0947.90024
Summary: We consider $$M/M/c$$ retrial queues with geometric loss and feedback when $$c=1,2$$. We find the joint generating function of the number of busy servers and the queue length by solving Kummer differential equation for $$c=1$$, and by the method of series solution for $$c=1,2$$.

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