Bridging Physical and Digital Traffic System Simulations with the Gulliver Test-Bed. - Christian Berger 001; Erik Dahlgren; Johan Grunden; Daniel Gunnarsson; Nadia Holtryd; Anmar Khazal; Mohamed Mustafa; Marina Papatriantafilou; Elad Michael Schiller; Christoph Steup; Viktor Swantesson; Philippas Tsigas (Nets4Cars/Nets4Trains, 2013)