Publications

Discussion Paper:

• Schiersch, Alexander, Irene Bertschek und Thomas Niebel (2023), Diversify or Not? – The Link Between Global Sourcing of ICT Goods and Firm Performance, ZEW Discussion Paper No.23-025, Mannheim.
• Axenbeck, Janna, Irene Bertschek, Patrick Breithaupt und Daniel Erdsiek (2023), Firm Digitalisation and Mobility – Do Covid-19-Related Changes Persist?, ZEW Discussion Paper No. 23-011, Mannheim.
• Bertschek, Irene, Joern Block, Alexander Kritikos und Caroline Stiel (2022), German Financial State Aid During COVID-19 Pandemic: Higher Impact Among Digitalized Self-Employed, ZEW Discussion Paper No. 22-045, Mannheim.
• Bertschek, Irene and David F. Müller (2021), Political Ignorance and the Internet, ZEW Discussion Paper No. 21-106, Mannheim.

An overview of scientific publications can be found here:

• Bertschek, Irene, Joern Block, Alexander Kritikos und Caroline Stiel (2023), German Financial State Aid During COVID-19 Pandemic: Higher Impact Among Digitalized Self-Employed, Entrepreneurship & Regional Development. DOI: 10.1080/08985626.2023.2196267

• Bertschek, Irene and David F. Müller (2022), Political Ignorance and the Internet, Journal of Economics and Statistics. 

  https://doi.org/10.1515/jbnst-2021-0066

• Bertschek, Irene and Reinhold Kesler (2022), Let the User Speak: Is Feedback on Facebook a Source of Firms' Innovation? , Information Economics and Policy, Volume 60, 100991.
• Irene Bertschek, Michael Polder and Patrick Schulte (2019), ‘ICT and Resilience in Times of Crisis: Evidence from Cross-Country Micro Moments Data’, Economics of Innovation and New Technology 28, 759–774.
• Irene Bertschek, Daniel Erdsiek and Manuel Trenz (2017), ‘IT Outsourcing—A Source of Innovation? Microeconometric Evidence for Germany’, Managerial and Decision Economics 38, 941–954.
• Irene Bertschek and Thomas Niebel (2016), ‘Mobile and More Productive? Firm-level Evidence on the Productivity Effects of Mobile Internet Use’, Telecommunications Policy 40, 888–898.
• Irene Bertschek, Wolfgang Briglauer, Kai Hüschelrath, Benedikt Kauf and Thomas Niebel (2015), ‘The Economic Impacts of Broadband Internet: A Survey’, Review of Network Economics 14, 201–227.
• Irene Bertschek, Jan Hogrefe and Fabienne Rasel (2015), ‘Trade and Technology: New Evidence on the Productivity Sorting of Firms’, Review of World Economics 151, 53–72.
• Irene Bertschek, Daniel Cerquera and Gordon J Klein (2013), ‘More Bits - More Bucks? Measuring the Impact of Broadband Internet on Firm Performance’, Information Economics and Policy 25, 190–203.
• Irene Bertschek (2011), ‘Wissensvermittlung versus Legitimationsfunktion’, Zeitschrift für Betriebswirtschaft 81, 1379–1399.
• Irene Bertschek and Jenny Meyer (2009), ‘Do Older Workers Lower IT-enabled Productivity? Firm-Level Evidence from Germany’, Jahrbücher für Nationalökonomie und Statistik 229(2+3), 327–342.
• Irene Bertschek, Helmut Fryges and Ulrich Kaiser (2006), ‘B2B or Not to Be: Does B2B E-Commerce Increase Labour Productivity?’, International Journal of the Economics of Business 13, 387–405.
• Irene Bertschek and Ulrich Kaiser (2004), ‘Productivity Effects of Organizational Change: Microeconometric Evidence’, Management Science 50, 394–404.
• Irene Bertschek and Alexandra Spitz-Oener (2003), ‘Informationstechnologien, organisatorische Veränderungen und Entlohnung’, Löhne und Beschäftigung 36, 599–615.
• Irene Bertschek and Michael Lechner (1998), ‘Convenient Estimators for the Panel Probit Model’, Journal of Econometrics 87, 329–371.
• Irene Bertschek and Horst Entorf (1996), ‘On Nonparametric Estimation of the Schumpeterian Link between Innovation and Firm Size: Evidence from Belgium, France, and Germany’, Empirical Economics 21, 401–426.
• Irene Bertschek (1995), ‘Product and Process Innovation as a Response to Increasing Imports and Foreign Direct Investment’, The Journal of Industrial Economics, 341–357.