First Author:   Erdal Atukeren Swiss Institute for Business Cycle Research (KOF) - ETH Zurich atukeren@kof.gess.ethz.ch   Weinbergstrasse 35, WEH - ETH Zentrum Zurich, CH-8092, Switzeland   +41 1 632 4683(Phone) +41 1 632 4683(Fax) http://www.kof.ethz.ch Second Author: Aniela Wirz University of Zurich and KOF / ETH Zurich wirz@kof.gess.ethz.ch   Weinbergstrasse 35,, WEH - ETH Zentrum Zurich, CH-8092, Switzerland   +41 1 632 5178(Phone) +41 632 1218(Fax) http://www.kof.ethz.ch