Gravier, E. [P:(DE-HGF)0] ; Gunn, J. P. [P:(DE-HGF)0] ; Lachambre, J. L. [P:(DE-HGF)0] ; Loarer, T. [P:(DE-HGF)0] ; Mank, G. [P:(DE-Juel1)VDB3554] ; Boucher, C. [P:(DE-HGF)0] ; Finken, K. H. [P:(DE-HGF)0] ; Jachmich, S. [P:(DE-HGF)0] ; Lehnen, M. [P:(DE-Juel1)VDB3460] ; van Oost, G. [P:(DE-HGF)0]