Sisay, Moges Asmare, and Igor A. Mayburov. β€œThe Paradox of Informalized Growth: Shadow Economy Expansion and Fiscal Erosion in Ethiopia, 1990–2023”. Economy of Regions 22, no. 2 (June 26, 2026): 461–474. Accessed June 26, 2026. https://economyofregions.org/ojs/index.php/er/article/view/1496.