Numerical Analysis of a New COVID-19 Control Model Incorporating Three Different Fractional Operators. Journal of Nonlinear Modeling and Analysis, [S. l.], v. 7, n. 4, p. 1274–1306, 2025. DOI: 10.12150/jnma.2025.1274. Disponível em: https://global-sci.com/index.php/jnma/article/view/13856. Acesso em: 6 dec. 2025.