A conceptual introduction to contraction theory. Revista de Investigaciones Universidad del Quindío, [S. l.], v. 23, n. 1, p. 48–55, 2012. DOI: 10.33975/riuq.vol23n1.418. Disponível em: https://revistas.uniquindio.edu.co/ojs/index.php/riuq/article/view/418. Acesso em: 25 jun. 2026.