KORKPOE, C. H.; OWUSU JUNIOR , P. Behaviour of Johannesburg Stock Exchange All Share Index Returns - An Asymmetric GARCH and News Impact Effects Approach . SPOUDAI Journal of Economics and Business, [S. l.], v. 68, n. 1, p. 26–42, 2018. Disponível em: http://spoudai.org/index.php/journal/article/view/139. Acesso em: 23 oct. 2024.