Computational Science and Its Applications – ICCSA 2004 International Conference, Assisi, Italy, May 14-17, 2004, Proceedings, Part I - Laganá, Antonio; Gavrilova, Marina L.; Kumar, Vipin; Mun, Youngsong; Tan, C. J. Kenneth; Gervasi, Osvaldo (Springer Berlin Heidelberg, 2004)