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The erlangization method for Markovian fluid flows
Ramaswami, V., (2008)
Erlangian approximations for the transient analysis of a fluid queue model for forest fire perimeter
Woolford, Douglas G., (2009)
Note--On the Merits of an "Approximation" to the Busy Period of the GI/G/1 Queue
Ramaswami, V., (1979)