European Journal of Operational Research
European Journal of Operational Research > 1997 > 102 > 2 > 264-278
European Journal of Operational Research > 2016 > 249 > 1 > 117-130
European Journal of Operational Research > 1997 > 102 > 2 > 264-278
European Journal of Operational Research > 2016 > 249 > 1 > 117-130