Conte, P. [P:(DE-HGF)0] ; Berns, A. E. [P:(DE-Juel1)129438] ; Philipp, H. [P:(DE-Juel1)VDB2349] ; Burauel, P. [P:(DE-Juel1)VDB202] ; Narres, H.-D. [P:(DE-Juel1)VDB1124] ; Vereecken, H. [P:(DE-Juel1)129549]