Obtention of type egg- shell catalysts: cobalt supported on composites materials. Revista de Investigaciones Universidad del Quindío, [S. l.], v. 24, n. 1, p. 161–166, 2013. Disponível em: https://ojs.uniquindio.edu.co/ojs/index.php/riuq/article/view/270. Acesso em: 25 jun. 2026.