“The European Union as an actor in globalisation: What are the European strategies in answer to the economic crisis?”, in: Ingolf Pernice and Rüdiger Schwarz, eds., Europa in der Welt - Von der Finanzkrise zur Reform der Union. Forum Constitutionis Europae – Volume 12, Nomos: Baden-Baden Europa in der Welt 2013, pp. 28-33.

"The Effective Rate of Interest on Target Balances", CESifo Working Paper No. 7878, September 2019 (Download, 214 KB)

"Pareto Optimality in the Extraction of Fossil Fuels and the Greenhouse Effect: A Note", CESifo Working Paper No. 2083, 2007; (Download, 279 KB), NBER Working Paper Nr. 13453, 2007.

"The Minimum Inflation Rate for Euroland"; (with M. Reutter), CESifo Working Paper No. 377, December 2000; (Download, 145 KB); NBER Working Paper No. 8085, 2001.

"The Competition Between Competition Rules", CESifo Working Paper No. 192, June 1999; NBER Working Paper No. 7273, July 1999; CEPR Discussion Papers No. 2214, August 1999.

"Factor Price Distortions and Public Subsidies in East Germany", CEPR Discussion Papers No. 1155, May 1995.

"Participation, Capitalization and Privatization, Report on Bolivia's Current Political Privatization Debate", (with Gerlinde Sinn), CESifo Working Paper No. 49, 1993; (Download, 3.6 MB).