First Author:   Ronald Wendner Graz University, Austria ronald.wendner@uni-graz.at   University of Graz, Department of Economics, Universitaetsstrasse 15, RESOWI F4 Graz, A-8010, Austria   ++43 316 380 3458(Phone) ++43 316 380 3458(Fax) Second Author: Ronald Wendner Graz University, Austria ronald.wendner@uni-graz.at   Department of Economics, Department of Economics, Universitaetsstrasse 15, RESOWI F4 Graz, A-8010, Austria   ++43 316 380 3458(Phone)