Eleonora Cappuccio (Department of Computer Science, University of Pisa), Andrea Esposito (Department of Computer Science, University of Bari Aldo Moro), Francesco Greco (Department of Computer Science, University of Bari Aldo Moro), Giuseppe Desolda (Department of Computer Science, University of Bari Aldo Moro), Rosa Lanzilotti (Department of Computer Science, University of Bari Aldo Moro), Salvatore Rinzivillo (ISTI CNR)