Luis f. Costa ISEG (School of Economics and Management), Technical University of Lisbon (TULisbon)   Lisboa, 1200-781 Portugal   lukosta@iseg.utl.pt   http://www.iseg.utl.pt/~lukosta/       Primary Research Focus: DGEM; fiscal policy; business cycles; IO-Macroeconomics interactions; open-economy macroeconomics.   JEL Areas: E3 : Prices, Business Fluctuations, and Cycles: General (includes Measurement and Data) C2 : Single Equation Models; Single Variables: General