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by Schmitt, Josephine B.; Ernst, Julian; Rieger, Diana; et al.
by Neubert, Stefan; Roth, Hans-Joachim; Yildiz, Erol
by Vollrath, Hans-joachim; Roth, Jurgen; Padberg, Friedhelm
by Roth, Hans-Joachim; Terhart, Henrike; Anastasopoulos, Charis
by Hans-Joachim Roth
by Stefan Neubert; ?Hans-Joachim Roth; ?Erol Yildiz