Modugno, Michele; Nikolaou, Kleopatra - European Central Bank - 2009
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2 European Central Bank, Kaisterstrasse 29, D-60311, Frankfurt am Main, Germany;
e-mail: michele.modugno@ecb.europa.eu …, Kleopatra.Nikolaou@ecb.europa.eu
3 Université Libre de Bruxelles, Avenue Adolphe Buyl 87, B-1050 Bruxelles, Belgium …