European Journal of Operational Research
European Journal of Operational Research > 2014 > 236 > 1 > 313-325
European Journal of Operational Research > 2014 > 236 > 1 > 340-350
European Journal of Operational Research > 2014 > 236 > 1 > 313-325
European Journal of Operational Research > 2014 > 236 > 1 > 340-350