在延迟Min (N, D)-策略M/G/1可修排队系统及最优控制策略
潘取玉,唐应辉

Analysis of M/G/1 Repairable Queueing System and Optimal Control Policy with a Replaceable Repair Facility Under Delay Min(N, D)-Policy
Quyu Pan,Yinghui Tang
图 4 服务台随时间的另一种可能发展进程