RODRÍGUEZ-MILLÁN, J. S. A topological approach to the study of COVID-19 pandemic: qualitative models for understanding and helping taking decisions. Revista Ingenio, [S. l.], v. 18, n. 1, p. 41–47, 2021. DOI: 10.22463/2011642X.2388. Disponível em: https://revistas.ufps.edu.co/index.php/ingenio/article/view/2388. Acesso em: 3 jul. 2024.