Computers & Operations Research
Computers and Operations Research > 2012 > 39 > 1 > 19-26
Computers and Operations Research > 2012 > 39 > 1 > 27-31
Computers and Operations Research > 2012 > 39 > 3 > 746-749
Computers and Operations Research > 2012 > 39 > 1 > 19-26
Computers and Operations Research > 2012 > 39 > 1 > 27-31
Computers and Operations Research > 2012 > 39 > 3 > 746-749