Operations Research Letters
Operations Research Letters > 2004 > 32 > 6 > 517-522
Operations Research Letters > 2004 > 32 > 6 > 591-594
Operations Research Letters > 2004 > 32 > 6 > 547-556
Operations Research Letters > 2004 > 32 > 6 > 517-522
Operations Research Letters > 2004 > 32 > 6 > 591-594
Operations Research Letters > 2004 > 32 > 6 > 547-556