First Author:   Erdal Atukeren ETH Zurich - KOF Swiss Economic Institute atukeren@kof.ethz.ch   ETH Zurich - KOF Swiss Economic Institute, Weinbergstrasse 35, WEH D4 Zurich, CH - 8092, Switzerland   +41 44 632 4683(Phone) +41 44 632 4683(Fax) http://www.kof.ethz.ch