Stephan LauermannDepartment of Economics, University of BonnVerified email at uni-bonn.de
Si ChenUniversity of Hong KongVerified email at univie.ac.at
Jan Appel (birth name: Voelzke)University of Muenster, Institute for Econometrics and Economic Statistics; Borchers & KollegenVerified email at wiwi.uni-muenster.de