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Estimación del riesgo de acciones a través de un modelo financiero y de modelos de heteroscedasticidad condicional autorregresiva. Revista UTCiencia: i-ISSN: 1390-6909. e-ISSN: 2602-8263, [S. l.], v. 1, n. 2, p. 61–71, 2017. Disponível em: https://investigacion.utc.edu.ec/index.php/utciencia/article/view/7. Acesso em: 6 ago. 2026.