European Journal of Operational Research
European Journal of Operational Research > 2017 > 258 > 2 > 652-663
European Journal of Operational Research > 2017 > 263 > 2 > 337-348
European Journal of Operational Research > 2017 > 258 > 2 > 652-663
European Journal of Operational Research > 2017 > 263 > 2 > 337-348