Grzybowski, L and R. Hawthorne (2025). Narrowing the `digital divide': the role of fixed and mobile infrastructure, Journal of Economics and Management Strategy.

Czajkowski, M., Zawadzki, W., Bernatek, G., & Sobolewski, M. (2024). Assessing the substitutability of mobile and fixed internet: The impact of 5G services on consumer valuation and price elasticity. Telecommunications Policy.

Grzybowski, L. and Á. Muñoz-Acevedo (2023). Impact of roaming regulation on revenues and prices of mobile operators in the EU, International Journal of Industrial Organization, International Journal of Industrial Organization.

Grzybowski, L., Duch-Brown, N., Verboven, F. and A. Romahn (2023). International price differences in online markets - Evidence from portable computers, American Economic Journal: Micro.

Grzybowski, L., Lindlacher, V. and O. Mothobi (2023). Mobile phones and financial inclusion in Sub-Saharan Africa, Information Economics and Policy.

Sobolewski, M., & Duch Brown, N. (2022). Content Moderation and Competition in Digital Markets. TechREG Chronicle, December.

Grzybowski, L., Zulehner, Ch. and J. Liang (2021). Bundling and consumer churn in telecommunications, Review of Network Economics.

Grzybowski, L. and A. Nicolle (2021) Estimating consumer inertia in repeated choices of smartphones, Journal of Industrial Economics.

Grzybowski, L., Duch-Brown, N., Verboven, F. and A. Romahn (2021). Are online markets more integrated than traditional markets? Evidence from consumer electronics, Journal of International Economics.

Grzybowski, L and R. Hawthorne (2021). Distribution of the benefits of regulation vs. competition: The case of mobile telephony in South Africa, International Journal of Industrial Organization.

Sobolewski, M. (2021). Measuring consumer well-being from using free-of-charge digital services. The case of navigation apps. Information Economics and Policy. 

Sobolewski, M., & Allessie, D. (2021). Blockchain Applications in the Public Sector: Investigating Seven Real-Life Blockchain Deployments and Their Benefits. Blockchain and the Public Sector: Theories, Reforms, and Case Studies. 

Grzybowski, L. Bourreau, M. and M. Hasbi (2018). Unbundling the incumbent and deployment of high-speed broadband: Evidence from France, International Journal of Industrial Organization.

Grzybowski, L., Nicolle, A. and Ch. Zulehner (2018). Impact of competition, investment and regulation on prices of mobile services: Evidence from France, Economic Inquiry.

Grzybowski, L., Liang, J. and M. Hasbi (2018). Transition from copper to fiber broadband: The role of connection speed and switching costs, Lukasz Grzybowski, Information Economics and Policy.

Sobolewski, M., & Czajkowski, M. (2018). Receiver benefits and strategic use of call externalities in mobile telephony markets. Information Economics and Policy.

Kopczewski, T., Sobolewski, M., & Miernik, I. (2018). Bundling or unbundling? Integrated simulation model of optimal pricing strategies. International Journal of Production Economics. 

Gyódi, K., Sobolewski, M., & Ziembiński, M. (2018). What drives price dispersion in the European e-commerce industry? Central European Economic Journal.

Grzybowski, L., Duch-Brown, N., Verboven, F. and A. Romahn (2017). The impact of online sales on consumers and firms. Evidence from consumer electronics, International Journal of Industrial Organization.

Sobolewski, M., Mazur, J., & Paliński, M. (2017). GDPR: A step towards a user-centric internet? Intereconomics.

Sobolewski, M., & Kopczewski, T. (2017). Estimating demand for fixed-line telecommunication bundles. Telecommunications Policy. 

Czajkowski, M., & Sobolewski, M. (2016). How much do switching costs and local network effects contribute to consumer lock-in in mobile telephony? Telecommunications Policy.