1. Centre for Research and Technology Hellas, Information Technologies Institute, 6th Km Charilaou-Thermi, 57001 Thermi, Greece
2. Department of Information and Communication Technologies, Pompeu Fabra University, Roc Boronat, 138, 08018 Barcelona, Spain
3. Autorita di Bacino Distrettuale delle Alpi Orientali, Cl. Seconda del Cristo, 4314, 30121 Venice, Italy
4. Catalan Institute for Research and Advanced Studies, Passeig Lluís Companys, 23, 08010 Barcelona, Spain