European Journal of Operational Research
European Journal of Operational Research > 2018 > 265 > 1 > 178-194
European Journal of Operational Research > 2018 > 266 > 1 > 238-246
European Journal of Operational Research > 2018 > 265 > 1 > 178-194
European Journal of Operational Research > 2018 > 266 > 1 > 238-246