GARCÍA, P. S.; SILVA, O. E.; ARDENGHI, J. R. Instantaneous messaging system: a distributed approach. Journal of Computer Science and Technology, [S. l.], v. 1, n. 05, p. 9 p., 2001. Disponível em: https://journal.info.unlp.edu.ar/JCST/article/view/984. Acesso em: 27 may. 2023.