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On the distribution of the number of customers in the D-BMAP/G a,b//1/M queue : a simple approach to a complex problem
Chaudhry, Mohan L., (2010)
Analysis of the queue-length distribution for the discrete-time batch-service Geo/Ga,Y/1/K queue
Yi, Xeung W., (2007)
Analysis of the queue-length distribution for the discrete-time batch-service Geo-G a,Y -1-K queue