//-->
Analysis of the machine repair problem: a diffusion process approach
Haryono, (1985)
Optimal control of an M/M/2 queueing system with finite capacity operating under the triadic (0,Q,N,M) policy
Wang, Kuo-Hsiung, (2002)
Cost analysis of a finite M/M/R queueing system with balking, reneging, and server breakdowns