Research topics and publications

European Commission, Joint Research Centre (2017-2023)

Content Moderation: Platform liability and competition in Digital Markets (2022); policy article [link]

Content Moderation: Content moderation on two-sided markets (2021); manuscript [link]

Content Moderation: A cost model for automated moderation of user generated content (2020); support to the impact assessment of Digital Services Act (2021, JRC)

Mobile operating systems: Competition in mobile operating systems (2022-23); working paper [link]

App Stores: App-store competition (2020); Ecosystem of mobile payment apps (2021)

Platform competition: Support to the members of economic expert panel on Digital Markets Act (2021); policy report [link]

Platform pricing: Two sided platforms: dynamic pricing and multiple equilibria (2021); working paper [link]

Data Access: Opening access to in-vehicle data, resources and functions - support to impact assessment (2023)

Zero-price services: Economic value of free-of charge navigation apps (2021-22); working paper [link1], journal article [link2]

Artificial Intelligence: Estimating investments in artificial intelligence in Europe (2020-21); policy reports [link1], [link2], [link3]

Distributed Ledgers: Blockchain for digital government (2018-2019); policy reports [link1], [link2], book chapter [link3]

Digital Transformation: Digital transformation in energy, construction and transport (2019); policy report [link]

Metaverse: Economics of virtual worlds (2023);  policy report [link]

Warsaw University and Digital Economy Lab (DELAB) (2006-2017)

E-commerce: Online price dispersion in the European e-commerce (2015); journal article [link]

Bundling: Economic properties of pure and mixed bundling strategies (2015-2016); journal articles [link1], [link2], working paper [link3]

Online privacy: Valuation of privacy and estimation of welfare effects from General Data Protection Regulation (GDPR) (2016-17); working paper [link1], policy article [link2]

Mobile telephony: Call externalities and entry deterrence (2018); journal article [link]

Mobile telephony: Estimation of switching costs and local network effects (2011-12, 2016); journal articles [link1], [link2], [link3]

Broadband: Fixed and mobile broadband substitution (2017); policy report [link]

Auctions: Simulation of SMRA Auction: An Application to forthcoming LTE Spectrum Auction in Poland (2014); journal article [link]

Orange Labs (2007-2011)

Churn modelling: Churn prediction in fixed telephony using proportional hazard models, logistic regression and decision trees in SAS enterprise miner (2008-10)

Diffusion modelling: Uptake of mobile telephony using diffusion models (2007); working paper [link]

Competition analysis: Modelling competition on mobile telephony markets using Hotelling model and numerical search for Nash equilibria (2008-09)

CASE Foundation (2003-2007, 2011-2014)

Taxation studies: Economic effects of the current VAT rules for passenger transport (2012); policy report [link];  A Study on R&D Tax Incentives (2013); policy report [link]

Industrial Competitiveness: Industrial Interconnectedness and Differences in Performance of Business Services across the EU25 (2012-13); working paper [link]; Competitiveness of the Polish Manufacturing Sector. Does Government Policy Matter? (2007); working paper [link]

Labour market and entrepreneurship: Model of Labour Market at the district level (2003), policy report [link]; Microenterprises. Economic Situation, Financing and Ownership (2002), book [link] (2002); Determinants of shadow economy In Poland (2008), report [link]