Investigation of COVID-19 outbreak as a case study in Italy using different fractional operators. Journal of Mathematical Modeling and Fractional Calculus, [S. l.], v. 1, n. 1, p. 38–62, 2024. DOI: 10.48165/jmmfc.2024.1103. Disponível em: https://journals.acspublisher.com/index.php/jmmfc/article/view/19857. Acesso em: 6 apr. 2025.