1. Department of Engineering, University of Perugia, Perugia, Italy
2. Department of Civil, Computer Science and Aeronautical Technologies Engineering, University “Roma Tre”, Roma, Italy
3. School of Computer Science and Electrical Engineering, University of Ottawa, Ottawa, ON, Canada
4. School of Computer Science, The University of Sydney, Sydney, NSW, Australia
5. Wilhelm-Schickard Institut für Informatik, University of Tübingen, Tübingen, Germany
6. School of Computer Science, Carleton University, Ottawa, ON, Canada