YARU, Mohammed; ABDULLAHI, Umar; MUHAMMED, Ismail. Informality, Governance Institutions and Tax Revenue Performance in Africa. African Journal of Economic and Business Research, Ethiopia, v. 4, n. 2, 2025. DOI: 10.20372/r8rmft31. Disponível em: https://journals.hu.edu.et/hu-journals/index.php/ajebr/article/view/1399.. Acesso em: 18 jan. 2026.