Affiliation: | 1. Institute of Econometrics and Statistics, University of Cologne, Germany;2. Department of Economics, University of Graz, Austria;1. Universita’ di Roma “Tor Vergata”, Dipartimento di Economia e Finanza, Via Columbia 2, 00133 Roma, Italy;2. ISTAT, DCSC-SER/C, Viale Liegi 13, 00198 Roma, Italy;3. Maastricht University, Department of Quantitative Economics, P.O.Box 616, 6200 MD Maastricht, The Netherlands |