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Performance Evaluation > 1998 > 34 > 2 > 69-89
Information Processing Letters > 1998 > 65 > 5 > 247-253
Information Processing Letters > 1996 > 59 > 2 > 109-115
Performance Evaluation > 1998 > 34 > 2 > 69-89
Information Processing Letters > 1998 > 65 > 5 > 247-253
Information Processing Letters > 1996 > 59 > 2 > 109-115