Bekele, Ayana Simachew. “The Enforcement of Federal Laws in States in Ethiopian Ethnic Federalism: The Deadlock Between the Federal Government and the Tigray Regional State on the New Law of Boundaries and Identity Issues”. European Scientific Journal, ESJ 15, no. 20 (July 31, 2019): 18. Accessed May 3, 2024. https://eujournal.org/index.php/esj/article/view/12206.