Mathematics propedeutic course in times of COVID-19. Revista de Investigaciones Universidad del Quindío, [S. l.], v. 34, n. 2, p. 138–147, 2022. DOI: 10.33975/riuq.vol34n2.984. Disponível em: https://ojs.uniquindio.edu.co/ojs/index.php/riuq/article/view/984. Acesso em: 25 jun. 2026.