European Journal of Operational Research
European Journal of Operational Research > 2017 > 258 > 1 > 104-112
European Journal of Operational Research > 2017 > 258 > 3 > 820-828
European Journal of Operational Research > 2017 > 258 > 1 > 104-112
European Journal of Operational Research > 2017 > 258 > 3 > 820-828