Leivaditis, Vasileios; Hofmann, Alexander; Haaf, Bernd; Wiegand, Anke; Papatriantafyllou, Athanasios; Grapatsas, Konstantinos; Koletsis, Efstratios; Charokopos, Nikolaos; Verras, Georgios-Ioannis; Tasios, Konstantinos; Skevis, Konstantinos; Panagiotopoulos, Ioannis; Antzoulas, Andreas; Mulita, Francesk; Dahm, Manfred.