European Journal of Operational Research
European Journal of Operational Research > 2005 > 160 > 1 > 72-87
European Journal of Operational Research > 2005 > 160 > 2 > 325-335
European Journal of Operational Research > 2005 > 162 > 1 > 239-250
European Journal of Operational Research > 2005 > 160 > 1 > 72-87
European Journal of Operational Research > 2005 > 160 > 2 > 325-335
European Journal of Operational Research > 2005 > 162 > 1 > 239-250