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2. Spanish Autonomic State Reform: Catalonia’s 2006 New Statute of Autonomy;The Journal of Law and Political Science,2008
3. The Politics of Subnational Constitutions and Local Government in Ethiopia;Perspectives of Federalism,2014
4. Subnational Constitutions in the Ethiopian Federal System in Light of the Demos, the Federalists and Deliberative Democracy Models of Subnational Constitutionalism,2019