Günel, H.Y. [P:(DE-Juel1)VDB103407] ; Batov, I.E. [P:(DE-HGF)0] ; Hardtdegen, H. [P:(DE-HGF)0] ; Sladek, K. [P:(DE-HGF)0] ; Winden, A. [P:(DE-Juel1)VDB97315] ; Weis, K. [P:(DE-Juel1)128645] ; Panaitov, G. [P:(DE-Juel1)128715] ; Grützmacher, D. [P:(DE-Juel1)125588] ; Schäpers, Th. [P:(DE-Juel1)128634]