José Luis Vicedo González Patricio Martínez-Barco Rafael Muñoz Maximiliano Saiz-Noeda Advances in Natural Language Processing, 4th International Conference, EsTAL 2004, Alicante, Spain, October 20-22, 2004, Proceedings 3-540-23498-5 EsTAL Lecture Notes in Computer Science 3230 Springer 2004 db/conf/tal/estal2004.html