Demographic pressure in the European Union - Increasing labour market participation, migration or old age participation to maintain fiscal sustainability, 11 June 2012, co-authored with Loek Groot.
Und jetzt? Towards a European Political Union, (in Dutch: Eurocommissarissen als wapen tegen wanbeleid van lidstaten), Me Judice on 1 December 2011.
Better safe than sorry - Individual risk-free pension schemes in the European Union, September 2011, revised version February 2012.
Create a new treasure fleet for individual risk-free pension savings for each working European (in Dutch: Creëer een nieuwe zilvervloot om te sparen voor pensioen), Het Financieele Dagblad, 24 augustus 2011, coa-authored with Martin M.G. Fase.
A global view on demographic pressure and labour market participation, July 2011, co-authored with Loek Groot. Article Demographic pressure versus labour market space at VOXEU.
On wage formation, wage flexibility and wage coordination - A focus on the wage impact of productivity in Germany, Greece, Ireland, Portugal, Spain and the United States, June 2011, co-authored with Ard den Reijer, presented at the CEPR/ECB/IfW Workshop Wages in a time of adjustment and restructuring. Article Apart from the fiscal compact – on competitiveness, nominal wages and labour productivity, VOXEU, 3 January 2012.
The EU's neighbouring economies: Emerging from the global crisis, 2010, editor and co-author, Occasional Paper in the DG ECFIN series European Economy of the European Commission no 59.
Euro-Mediterranean Process - Union for the Mediterranean: Macroeconomic and financial developments in the wake of the global crisis at the Southern rim of the Mediterranean, 2009, co-authored with Maria Inmaculada Montero Luque, paper at the European Commission.
Impact of the global crisis on neighbouring countries of the EU, 2009, editor and co-author, Occasional Paper in the DG ECFIN series European Economy of the European Commission no 48.
Macroeconomic policy reactions to soaring food prices in Mediterranean countries, Russia, the CIS and the GCC, 2008, co-authored with Kiril Strahilov, paper at the European Commission. Summary in the European Economy Research Letter, December 2008, page 12.
European neighbourhood policy : Economic Review of EU neighbour countries, August 2008, editor and co-author, European Economy Occasional Papers of the European Commission no 40, August 2008.
European neighbourhood policy : Economic Review of EU neighbour countries, June 2007, editor and co-author, European Economy Occasional Papers of the European Commission no 30.
A proposal for the inflation targeting communication strategy of the Bank of Albania, 2007, co-authored with Erinda Nervaj, Rigers Kaso, Ina Kraja and Doriana Lama, chapter in proceedings of the Round Table on Inflation Targeting 2, Central Bank of Albania, Tirana.
What about monetary policy in Albania? Is the exchange rate channel (still) the main transmission channel?, March 2005, also in Albanian: Çfarë mund të thuhet për transmetimin e politikës monetare në Shqipëri? A është (akoma) kursi i këmbimit kanali kryesor? and short version published in the Albanian Magazine Monitor, complete version in the Conference Proceedings Central Banking in the Time of Integration, Durrës, March 24-25.
Dutch small companies compared to the Dutch large companies: Trading in tougher economic conditions?, December 2003, Quarterly Bulletin of De Nederlandsche Bank, pp 57-65. Also in Dutch: Het Nederlandse kleinbedrijf in vergelijking met het Nederlandse grootbedrijf: Conjunctureel in (nog) zwaarder weer?.
The role of fiscal policy within the EMU, March 2001, co-authored with Maria Demertzis, Quarterly Bulletin of De Nederlandsche Bank.
On wage formation, wage development and unemployment - The case of Spain, Ireland and the Netherlands, 2001, co-authored with Ard den Reijer, De Nederlandsche Bank WO Research Memorandum no 677.
Achieving price stability in the eurozone: Monetary or inflation targeting?, 2000, De Nederlandsche Bank DNB Staff Reports no 43.
De Goldilocks economy of the United States in comparison with Europe, March 2000, Quarterly Bulletin of De Nederlandsche Bank. Also in Dutch: De Goudlokje-economie van de Verenigde Staten in vergelijking met Europa - Een analyse met EUROMON.
The benefits of a common European currency (in Dutch: De baten van een gemeenschappelijke Europese munt), 1999, co-authored with Peter van Els, published in Tijdschrift voor Politieke Economie 21(2) 48-65.
An econometric analysis of the bank note circulation in the Netherlands, 1997, co-authored with Angela E. Förch, De Nederlandsche Bank WO Research Memorandum no 509.