RAÚL, G. M.; PLAZA CASADO, P.; PRADO ROMÁN, M. Market efficiency analysis using AI models based on Investors’ Mood. Revista Perspectiva Empresarial, [S. l.], v. 7, n. 2, p. 10–23, 2021. DOI: 10.16967/23898186.649. Disponível em: https://revistas.ceipa.edu.co/index.php/perspectiva-empresarial/article/view/649. Acesso em: 24 sep. 2022.