Nielen, L. [P:(DE-HGF)0] ; Tappertzhofen, S. [P:(DE-HGF)0] ; Linn, E. [P:(DE-HGF)0] ; Kavehei, O. [P:(DE-HGF)0] ; Skafidas, S. [P:(DE-HGF)0] ; Valov, I. [P:(DE-Juel1)131014] ; Waser, R. [P:(DE-Juel1)131022]