Bikowski, J. [P:(DE-Juel1)VDB94577] ; Huisman, J. A. [P:(DE-Juel1)129472] ; Vrugt, J.A. [P:(DE-HGF)0] ; Vereecken, Harry [P:(DE-Juel1)129549] ; van der Kruk, Jan [P:(DE-Juel1)129561]