European Journal of Operational Research
European Journal of Operational Research > 1996 > 92 > 3 > 550-572
European Journal of Operational Research > 1996 > 92 > 3 > 512-527
European Journal of Operational Research > 1996 > 92 > 3 > 550-572
European Journal of Operational Research > 1996 > 92 > 3 > 512-527