KEHO, Yaya. Testing Wagner’s Law in the presence of Structural Changes: New Evidence from Six African Countries (1960-2013). International Journal of Economics and Financial Issues, [S. l.], v. 6, n. 1, p. 1–6, 2016. Disponível em: https://mail.econjournals.com/index.php/ijefi/article/view/1545. Acesso em: 22 dec. 2024.