LIU, Xin. Machine Learning Algorithms for Predicting ETF Directional Movements Using Technical Indicators and VIX. Finance & Economics, [S. l.], v. 3, n. 6, p. 9302, 2025. DOI: 10.61173/a8bb7m34. Disponível em: https://fe.deanfrancis.press/article/view/303. Acesso em: 4 nov. 2026.