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2. Briefing: Better Law-Making in Action. Author: Claudio Collovà, Ex-Ante Impact Assessment Unit, Directorate for Impact Assessment and European Added Value;European Parliamentary Research Service EPRS;European Parliament - PE,2015
3. D. Easton (1965). A systems analysis of political life. New York: John Wiley & Sons. D. Easton (1965). A systems analysis of political life. New York: John Wiley & Sons.
4. Soft Systems Methodology*