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Regime Changes in the Volatility of Stock Markets. The Economics and Finance Letters, [S. l.], v. 6, n. 1, p. 92–99, 2019. DOI: 10.18488/journal.29.2019.61.92.99. Disponível em: https://archive.conscientiabeam.com/index.php/29/article/view/1622. Acesso em: 7 aug. 2026.