Computers & Operations Research, Volume 40

Volume 40, Number 1, January 2013

Volume 40, Number 2, February 2013

Volume 40, Number 3, March 2013

Part 1: Special Issue Papers Part 2: Regular Papers

Volume 40, Number 4, April 2013

Volume 40, Number 5, May 2013

Volume 40, Number 6, June 2013