Computers & Operations Research
Computers and Operations Research > 2003 > 30 > 3 > 367-381
Computers and Operations Research > 2003 > 30 > 4 > 505-526
Computers and Operations Research > 2003 > 30 > 5 > 745-771
Computers and Operations Research > 2003 > 30 > 13 > 1931-1944