COMPUTERS & OPERATIONS RESEARCH, vol. 33, no. 5, page. 1308 - 1325, 2006-05
COMPUTERS & OPERATIONS RESEARCH, vol. 29, no. 8, page. 1009 - 1024, 2002-07
PRODUCTION PLANNING & CONTROL, vol. 13, no. 1, page. 56 - 65, 2002-01
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