T. Choukri,, The transient blocking probabilities in M/M/N loss systems via large deviations, Advances in applied probability , 25(2), 1993, pp. 483-486
By using large devaitions theory, we give asymptotic formulas for the transient blocking probabilities of M/M/N/N and M (with finite Poissonian sources) M/N/N queues.