Tijani UH, Kalu EU, Ukpere WI, Monyei FE. UNDERSTANDING THE REVENUE PROFILES OF OPEC MEMBER COUNTRIES IN THE FACE OF OIL PRICE FLUCTUATIONS AND ECONOMIC POLICY UNCERTAINTY. Ver. Dir. [Internet]. 2025 Dec. 15 [cited 2026 Jan. 27];22(6):e224007. Available from: https://revista.domhelder.edu.br/index.php/veredas/article/view/4007