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European Journal of Operational Research > 1998 > 104 > 1 > 46-62
European Journal of Operational Research > 1998 > 104 > 1 > 77-92
European Journal of Operational Research > 1998 > 104 > 1 > 63-76
European Journal of Operational Research > 1998 > 104 > 1 > 46-62
European Journal of Operational Research > 1998 > 104 > 1 > 77-92
European Journal of Operational Research > 1998 > 104 > 1 > 63-76