Operations Research Letters
Operations Research Letters > 2001 > 29 > 5 > 199-205
Operations Research Letters > 2001 > 29 > 5 > 241-245
Operations Research Letters > 2001 > 29 > 5 > 211-215
Operations Research Letters > 2001 > 29 > 5 > 199-205
Operations Research Letters > 2001 > 29 > 5 > 241-245
Operations Research Letters > 2001 > 29 > 5 > 211-215