Hauler, Felix [P:(DE-Juel1)VDB68297] ; van Gestel, T. [P:(DE-Juel1)VDB61604] ; Meulenberg, Wilhelm Albert [P:(DE-Juel1)129637] ; Bram, Martin [P:(DE-Juel1)129591] ; Stöver, Detlev [P:(DE-Juel1)129666]