Fratini, Filippo [P:(DE-HGF)0] ; Trotsenko, Sergiy [P:(DE-Ds200)OR1305] ; Tashenov, Stanislav [P:(DE-HGF)0] ; Stöhlker, Thomas [P:(DE-Ds200)OR1264] ; Surzhykov, Andrey [P:(DE-HGF)0]