European Journal of Operational Research
European Journal of Operational Research > 2018 > 264 > 2 > 534-547
European Journal of Operational Research > 2018 > 265 > 1 > 119-132
European Journal of Operational Research > 2018 > 264 > 2 > 534-547
European Journal of Operational Research > 2018 > 265 > 1 > 119-132