„The Effective Rate of Interest on Target Balances“, CESifo Working Paper Nr. 7878, September 2019; (Download, 214 KB).

„Pareto Optimality in the Extraction of Fossil Fuels and the Greenhouse Effect: A Note“, CESifo Working Paper Nr. 2083, 2007; (Download, 279 KB), NBER Working Paper Nr. 13453, 2007.

„The Minimum Inflation Rate for Euroland“, (zusammen mit M. Reutter), CESifo Working Paper Nr. 377, 2000; (Download, 145 KB); NBER Working Paper Nr. 8085, 2001.

„The Competition Between Competition Rules“, CESifo Working Paper Nr. 192, Juni 1999; NBER Working Paper Nr. 7273, Juli 1999; CEPR Discussion Papers Nr. 2214, August 1999.

„Factor Price Distortions and Public Subsidies in East Germany“, CEPR Discussion Papers Nr. 1155, Mai 1995.

„Participation, Capitalization and Privatization, Report on Bolivia's Current Political Privatization Debate“, (zusammen mit Gerlinde Sinn), CESifo Working Paper Nr. 49, 1993; (Download, 3.5 MB).