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Structural Change and Economic Dynamics > 2001 > 12 > 4 > 479 - 485
Automatica > 2000 > 36 > 6 > 879-887
Structural Change and Economic Dynamics > 1999 > 10 > 3-4 > 381 - 394
Structural Change and Economic Dynamics > 2001 > 12 > 4 > 479 - 485
Automatica > 2000 > 36 > 6 > 879-887
Structural Change and Economic Dynamics > 1999 > 10 > 3-4 > 381 - 394