Chew, Junxian [P:(DE-Juel1)173824] ; Gibbon, Paul [P:(DE-Juel1)132115] ; Brömmel, Dirk [P:(DE-Juel1)143606] ; de Vries, Peter [P:(DE-HGF)0] ; Gribov, Yuri [P:(DE-HGF)0]