- Fiscal Federalism and Economic Performance: New Evidence from Switzerland, CESifo Working Paper No. 7250, Munich, 2018 (with LARS P. FELD and CHRISTOPH A. SCHALTEGGER).
- Grenzabschöpfungsraten im deutschen Finanzausgleich, Diskussionspapier 18/04, Walter Eucken Institute and Working Paper 02/2018, German Council of Economic Experts, 2018 (with LARS P. FELD and YANNICK BURY).
- Effects of Fiscal Rules: 85 Year's Experience in Switzerland, CESifo Working Paper Series No. 6063, Munich, 2016 (with LARS P. FELD).
- Vertical Effects of Fiscal Rules: The Swiss Experience, CESifo Working Paper Series No. 5043, Munich, 2014 (with LARS P. FELD).
- Panel Cointegration Tests on the Fiscal Sustainability of German Laender, CESifo Working Paper Series No. 4929, Munich, 2014 (with LARS P. FELD and EKKEHARD A. KÖHLER).
- Fiscal Sustainability of the German Laender: Time Series Evidence, CESifo Working Paper Series No. 4928, Munich, 2014 (with LARS P. FELD and EKKEHARD A. KÖHLER).
- Sustainability of German Fiscal Policy and Public Debt: Historical and Time Series Evidence for the Period 1850–2010, CESifo Working Paper Series No. 1435, Munich, 2013 (with LARS P. FELD and EKKEHARD A. KÖHLER).