Computers & Operations Research
Computers and Operations Research > 2009 > 36 > 4 > 1064-1089
Computers and Operations Research > 2009 > 36 > 12 > 3136-3142
Computers and Operations Research > 2009 > 36 > 4 > 1064-1089
Computers and Operations Research > 2009 > 36 > 12 > 3136-3142