ALSULAMI, M. Analyzing Public Concerns Over COVID-19 Variants Using Social Media. Communications in Mathematics and Applications, [S. l.], v. 13, n. 1, p. 379–386, 2022. DOI: 10.26713/cma.v13i1.1977. Disponível em: http://www.journals.rgnpublications.com/index.php/cma/article/view/1977. Acesso em: 16 jun. 2025.