José Neuman de Souza Petre Dini Pascal Lorenz Telecommunications and Networking - ICT 2004, 11th International Conference on Telecommunications, Fortaleza, Brazil, August 1-6, 2004, Proceedings ICT Lecture Notes in Computer Science 3124 Springer 2004 3-540-22571-4 https://doi.org/10.1007/b99377 db/conf/ict/ict2004.html