Affiliation: | 1. Dip. di Ingegneria Elettronica e dell?Informazione, Universitá degli Studi di Perugia, Italy;2. School of Information Technologies, The University of Sydney, Australia;3. School of Basic Sciences, École Polytechnique Fédérale de Lausanne, Switzerland;4. Institute of Theoretical Informatics, Karlsruhe Institute of Technology, Germany |