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it also demonstrates that all countries face the same difficulties in respect of evaluation, be it the choice of reference systems (the goals, the situation before or in other countries, the ideal situation), the observation angles (internal or external), the subjects to be studies (implementation, the effects, effective or implicit functions) or the measurement tools.
Από τον Ιούνιο του 1993 το δίκτυο αυτό υποστηρίζεται από το «european science foundation.
