- Renata Vieira, Paulo Quaresma, Maria das Graças Volpe Nunes, Nuno J. Mamede, Claudia Oliveira, Maria Carmelita Dias, editors, Computational Processing of the Portuguese Language, 7th International Workshop, PROPOR 2006, Itatiaia, Brazil, May 13-17, 2006, Proceedings. Volume 3960 of Lecture Notes in Computer Science, Springer, 2006.