European Journal of Operational Research
European Journal of Operational Research > 2018 > 264 > 3 > 847-858
European Journal of Operational Research > 2018 > 266 > 3 > 1120-1133
European Journal of Operational Research > 2018 > 264 > 3 > 847-858
European Journal of Operational Research > 2018 > 266 > 3 > 1120-1133