@techreport{oai:tsukuba.repo.nii.ac.jp:00022610,
 author = {Kawasaki, Norikazu and Takagi, Hideaki and 高木, 英明 and Takahashi, Yutaka and Hong, Sung-Jo and Hasegawa, Toshiharu},
 month = {},
 title = {Waiting time analysis of MX/G/1 queues with/without vacations under ramdom order of service discipline},
 year = {1999}
}