Steady-state analysis of a discrete-time batch arrival queue with working vacations. - Ji-Hong Li; Wei-Qi Liu; Naishuo Tian (Perform. Evaluation, 2010)

Social optimization in M/M/1 queue with working vacation and N-policy. - Qing-Qing Ma; Ji-Hong Li; Wei-Qi Liu (RAIRO Oper. Res., 2018)