Tietze-Jaensch, H. [P:(DE-Juel1)130425] ; Filges, D. [P:(DE-Juel1)VDB384] ; Prasuhn, D. [P:(DE-Juel1)VDB1283] ; Stelzer, H. [P:(DE-Juel1)VDB1576] ; Engels, U. [P:(DE-Juel1)VDB4091]