By Zhang Zhe G.   Tian Naishuo   in Queueing Systems

ISSN:0257-0130|45|2|161-175

Springer Publishing Company ‎(2003)‎

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By Xu Xiuli   Zhang Zhongjun   Tian Naishuo   in International Journal of Operational Research

ISSN:1745-7645|6|3|420-434

Inderscience Publishers‎(2009)‎

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