Spengel, Christoph, Barbara Stage und Daniela Steinbrenner (2022), R&D Tax Incentive Regimes – A Comparison and Evaluation of Current Country Practices, World Tax Journal 14(2).

Casi, Elisa, Christoph Spengel und Barbara Stage (2020), Cross border tax evasion after the common reporting standard: game over?, Journal of Public Economics 190, 104-240.

Bilicka, Katarzyna A., Elisa Casi-Eberhard, Carol Seregni und Barbara Stage (2021), Qualitative Information Disclosure: Is Mandating Additional Tax Information Disclosure Always Useful?, ZEW Discussion Paper No. 21-047, Mannheim

Casi, Elisa, Christoph Spengel und Barbara Stage (2018), Cross-Border Tax Evasion After the Common Reporting Standard: Game Over?, ZEW Discussion Paper No. 18-036, Mannheim

Spengel, Christoph, Frank Schmidt, Jost Heckemeyer, Katharina Nicolay, Alexandra Bartholmeß, Christopher Ludwig, Daniela Steinbrenner, Peter Buchmann, Theresa Bührle, Verena Dutt, Leonie Fischer, Julia Spix, Barbara Stage, Stefan Weck und Sophia Wickel (2022), Effective Tax Levels Using the Devereux/Griffith Methodology - Update 2021, Final Report 2021, Europäische Kommission - Generaldirektion Steuern und Zollunion, Mannheim

Dutt, Verena, Friedrich Heinemann, Christoph Spengel und Barbara Stage (2021), Aktuelle steuerpolitische Konzepte und ihre Folgen für den Standort - Untersuchung zur Wettbewerbsfähigkeit Deutschlands, Stiftung Familienunternehmen, München

Spengel, Christoph, Frank Schmidt, Jost Henrich Heckemeyer, Katharina Nicolay, Alexandra Bartholmeß, Christopher Ludwig, Daniela Steinbrenner, Peter Buchmann, Theresa Bührle, Verena Dutt, Leonie Fischer, Julia Spix und Barbara Stage (2021), Effective Tax Levels Using the Devereux/Griffith Methodology - Update 2020, EU-Kommission, Mannheim

Spengel, Christoph, Frank Schmidt, Jost Henrich Heckemeyer, Katharina Nicolay, Alexandra Bartholmeß, Christopher Ludwig, Daniela Steinbrenner, Peter Buchmann, Theresa Bührle, Verena Dutt, Leonie Fischer und Barbara Stage (2020), Effective Tax Levels Using the Devereux/Griffith Methodology - Update 2019, EU-Kommission, Mannheim

Spengel, Christoph, Frank Schmidt, Jost Henrich Heckemeyer, Katharina Nicolay, Alexandra Bartholmeß, Christopher Ludwig, Daniela Steinbrenner, Rainer Bräutigam, Peter Buchmann, Theresa Bührle, Elisa Casi, Verena Dutt, Leonie Fischer, Christoph Harendt, Raphael Müller, Thomas Schwab, Barbara Stage, Heiko Vay und Ann-Catherin Werner (2019), Effective Tax Levels Using the Devereux/Griffith Methodology - Update 2018, Project for the EU Commission TAXUD/2018/DE/307 Intermediary Report 2018 , Mannheim

2020: How does digitalization affect the tax sensitivity of location decisions of MNEs?, NTA 113th Annual Conference on Taxation, (virtual), Vereinigte Staaten von Amerika (USA)

2020: Qualitative Information Disclosure: Is Mandating Additional Tax Information Disclosure Always Useful?, University of Oxford Center for Business Taxation Doctoral Conferencez, Oxford, UK (virtual), Vereinigtes Königreich

2020: Qualitative Information Disclosure: Is Mandating Additional Tax Information Disclosure Always Useful?, 2nd WEI-ZEWWorkshop, Walter Eucken Institut Freiburg, Deutschland

2019: Cross-Border Tax Evasion After the Common Reporting Standard - Game Over?, 2019 IIPF Annual Congress, University of Glasgow, Vereinigtes Königreich

2019: Cross-Border Tax Evasion After the Common Reporting Standard - Game Over?, 21st ZEW Summer Workshop for Young Economists “Advances in Empirical Public Economics”, ZEW Mannheim, Deutschland

2019: Qualitative Tax Disclosure and Tax Aggressiveness, 112th Annual Conference on Taxation, 2019, Tampa, Florida, Vereinigte Staaten von Amerika (USA)

2019: Qualitative Tax Disclosure and Tax Aggressiveness, 2019 ZEW Public Finance Conference: The Political Economy of European (Dis)Integration, Mannheim, ZEW, Deutschland

2018: Grenzüberschreitende Steuervermeidung nach dem globalen Standard für den automatischen Informationsaustausch über Finanzkonten: Game over?, International Tax Cooperation: The Challenges and Opportunities of Multilateralism , University of Oxford, Vereinigtes Königreich