“The SIRD Epidemiological Model Using Caputo Fractional Derivatives Applied to Study the Spread of the COVID-19 in the Peruvian Region of Tacna”. Selecciones Matemáticas 11, no. 02 (dezembro 28, 2024): 236–248. Acesso em julho 18, 2026. https://revistas.unitru.edu.pe/index.php/SSMM/article/view/6155.