European Journal of Operational Research
European Journal of Operational Research > 2005 > 166 > 2 > 557-575
European Journal of Operational Research > 2005 > 166 > 2 > 547-556
European Journal of Operational Research > 2005 > 166 > 2 > 557-575
European Journal of Operational Research > 2005 > 166 > 2 > 547-556