University of Paderborn,
Chair of Business Administration, esp. Business Taxation

University of Paderborn,
Chair of Business Administration, esp. Accounting

University of Paderborn,
Chair of International Theory of Growth and Economic Cycles

Free University Berlin,
Chair of Banking and Finance

Karl-Franzens-University of Graz,
Chair of Tax Accounting

ETH Swiss Federal Institute of Technology Zürich,
Chair of Applied Economics: Innovation and Internationalization

Humboldt-University of Berlin,
KPMG-Endowed Chair for Business Taxation

Karl-Franzens-University of Graz,
Institute for Financial Accounting and Taxation

University of Salzburg,
Institute of Economics

University of Passau,
Chair of Business Administration, esp. Corporate Taxation and Taxation