JQ3       = Ranking according to VHB-Jourqual 3 (2015)   
                 In this ranking: 4x A+; 4x A; 13x B; 9x C; 1x D

AJG        = Association of Business Schools (ABS) Academic Journal Quality Guide (AJG)
                (2018). In this ranking:
                4x Grade 4*; 1x Grade 4; 7x Grade 3; 7x Grade 2; 7x Grade 1

IF           = Thomson-Reuters Impact Factor (2017)

HB          = Handelsblatt BWL Ranking (2009) supplemented by HB VWL Ranking (2015)
                 In this ranking:
                 4x 1; 1x 0.7; 3x 0.5; 1x 0.4; 2x 0.3; 4x 0.2; 9x 0.15; 2x 0.1

FT50       = Financial Times Top 50 Journals used in Business School Research Rankings
                 (2018). In this ranking: 5x

Refereed journal articles (with double-blind review process)

Adam, M.T.P.  & Krämer, J. (2022).
Evaluating the Emotional Bidding Framework: New Evidence from a Decade of Neurophysiology. Electronic Markets, 32(3), https://doi.org/10.1007/s12525-022-00555-x. [JQ3: B; IF: 3.818; AJG: Grade 2; HB: 0.1]

Krämer, J., & Schnurr, D. (2022)
Big Data and Digital Markets Contestability: Theory of Harm and Data Access Remedies. Journal of Competition Law & Economics, 18(2), 255-322. doi:10.1093/joclec/nhab015

Krämer,J. (2020)
Personal Data Portability in the Platform Economy: Economic Implications and Policy Recommendations. Journal of Competition Law & Economics, 17(2), 263-308. doi:10.1093/joclec/nhaa030

Krämer, J., & Stüdlein, N. (2019).
Data portability, data disclosure and data-induced switching costs: Some unintended consequences of the General Data Protection Regulation. Economics Letters, 181, 99-103. https://doi.org/10.1016/j.econlet.2019.05.015[JQ3: B; IF: 0.581; AJG: Grade 3; HB: 0.5]

Krämer, J., Schnurr, D., & Wohlfarth, M. (2019).
Winners, Losers, and Facebook: The Role of Social Logins in the Online Advertising Ecosystem. Management Science, 65(4), 1678-1699. https://doi.org/10.1287/mnsc.2017.3012 [JQ3: A+; IF: 3.544; AJG: Grade 4*; HB: 1]

Horstmann, N., Krämer, J., & Schnurr, D. (2019).
Number Effects and Tacit Collusion in Experimental Oligopolies. Journal of Industrial Economics,66(3), 650-700. https://doi.org/10.1111/joie.12181  [JQ3: A; IF: 1.036; AJG: Grade 3; HB: 0.3]

Krämer, J., & Schnurr, D. (2018)
Margin Sqeeze Regulation and Infrastructure Competition. Information Economics and Policy, 45, 30-46.  doi.org/10.1016/j.infoecopol.2018.09.001 [IF: 0.980; AJG: Grade 2; HB: 0.15]

Krämer, J., & Peitz, M. (2018).
A Fresh Look at Zero-Rating. Telecommunications Policy, 42(7), 501-513. doi:10.106/j.telpol.2018.06.005 [JQ3: C; IF: 2.087; AJG: Grade 1; HB: 0.15]

Krämer, J., & Schnurr, D. (2018).
Is there a need for platform regulation in the EU?. Telecommunications Policy, 42(7), 514-529. doi:10.1016/j.telpol.2018.06.004 [JQ3: C; IF: 2.087; AJG  Grade 1; HB: 0.15]

Krämer, J., & Wohlfarth, M. (2018).
Market power, regulatory convergence, and the role of data in digital markets. Telecommunications Policy, 42(2), 154-171. doi:10.1016/j.telpol.2017.10.004 [JQ3: C; IF: 2.087; AJG: Grade 1; HB: 0.15]

Easley, R., Guo, H., & Krämer, J. (2018).
From Network Neutrality to Data Neutrality: A Techno-Economic Framework and Research Agenda. Information Systems Research, 29(2), 253-272. doi:10.1287/isre.2017.0740 [JQ3: A+; IF: 2.301; AJG: Grade 4*; HB: 1]

Feige, C., Ehrhart, K.-M., & Krämer, J. (2018).
Climate Negotiations in the Lab: A Threshold Public Goods Game with Heterogeneous Contributions Costs and Non-binding Voting. Environmental and Resource Economics, 70(2), 343-362. doi:10.1007/s10640-017-0123-x [IF: 1.961, AJG: Grade 3; HB: 0.3].

Krämer, J., & Vogelsang, I. (2017).
Co-Investments and Tacit Collusion in Regulated Network Industries: Experimental Evidence. Review of Network Economics, 15(1), 35-61. http://ssrn.com/abstract=2119927 [IF: 0.357; AJG: Grade 2; HB: 0.15].

Dalen, A., & Krämer, J. (2017).
Towards a user-centered feedback design for smart meter interfaces to support efficient energy-use choices: A design science approach. Business & Information Systems Engineering / Wirtschaftsinformatik, 59(5), 361-373. [JQ3: B; IF: 2.596; AJG: Grade 2; HB: 0.2]

Astor, P., Adam, M. T. P., & Krämer, J. (2016).
Affective Images, Emotion Regulation and Auction Behavior: A Psychophysiological Experiment on the Role of Unconscious Emotional Processes in Internet Auctions. Journal of Interactive Marketing, 35, 56-59. [JQ3: B, IF: 3.864; AJG: Grade 3; HB: 0.4]

Krämer, J, & Wohlfarth, M. (2015).
Regulating Over-the-Top Service Providers in Two-Sided Content Markets: Insights from the Economic Literature. Digiworld Economic Journal (formely: Communications & Strategies), 99, 51-71. 

Krämer, J, & Wiewiorra, L. (2015).
When 'just' is just not enough: Why consumers do not appreciate non-neutral Internet access services. Business & Information Systems Engineering, 57(5), 325-338 doi:10.1007/s12599-015-0398-9 [JQ3: B; IF: 2.596; AJG: Grade 2; HB: 0.2]

Adam, M. T. P., Krämer, J., & Müller, M. (2015).
Auction Fever! How time pressure and social competition affect bidders’ arousal and bids in retail auctions. Journal of Retailing, 91, 468-485  doi:10.1016/j.jretai.2015.01.003 [JQ3: A, IF: 5.480; AJG: Grade 4; HB: 0.7]

Kourandi, F., Krämer, J., & Valletti, T. (2015).
Net Neutrality, Exclusivity Contracts and Internet Fragmentation. Information Systems Research, 26(2), 320-338. doi:10.1287/isre.2015.0567 [JQ3: A+; IF: 2.301; AJG: Grade 4*; HB: 1]

Krämer, J., & Schnurr, D. (2014).
A Unified Framework for Open Access Regulation of Telecommunications Infrastructure: Review of the Economic Literature and Policy Guidelines. Telecommunications Policy, 38(11), 1160-1179. doi:10.1016/j.telpol.2014.06.006 [JQ3: C; IF: 2.087; AJG: Grade 1; HB: 0.15]

Köhler, P., Krämer, J., & Krüger, L. (2014).
Optimal Choice and Consumption of Cost Cap Tariffs: Theory and Empirical Evidence. Business Research, 7(1), 161-190. doi:10.1007/s40685-014-0007-7 [JQ3: B]

Krämer, J., Wiewiorra, L., & Weinhardt, C. (2013).
Net Neutrality: A Progress Report. Telecommunications Policy, 37(9), 794-813 doi:10.1016/j.telpol.2012.08.005 [JQ3: C; IF: 2.087; AJG: Grade 1; HB: 0.15]
Most cited article in Telecommunications Policy since 2013

Elsner, H., & Krämer, J. (2013).
Managing Corporate Portal Usage with Recommender Systems. Business & Information Systems Engineering, 5(4), 213-225 doi:10.1007/s12599-013-0275-3 [JQ3: B; AJG: Grade 2; IF: 2.596; HB: 0.2]

Elsner, H., & Krämer, J. (2013).
Nutzungsmanagement von Unternehmensportalen mithilfe von Empfehlungssystemen. Wirtschaftsinformatik, 55(4), 205-219 doi:10.1007/s11576-013-0370-6 [JQ3: B; IF: 2.596; HB: 0.2]

Horstmann, N., & Krämer, J. (2013).
Price Discrimination or Uniform Pricing: Which Colludes More?. Economics Letters, 120(3), 397–383. doi:10.1016/j.econlet.2013.05.011 [JQ3: B; IF: 0.581; AJG  Grade 3; HB: 0.5]

Krämer, J., & Wiewiorra, L. (2012).
Network Neutrality and Congestion Sensitive Content Providers: Implications for Content Variety, Broadband Investment and Regulation. Information Systems Research, 23(4), 1303-1321. doi:10.1287/isre.1120.0420 [JQ3: A+; IF: 2.301; AJG: Grade 4*; HB: 1]
Winner of the VHB-Nachwuchspreis 2013

Adam, M.T.P., Krämer, J., & Weinhardt, C. (2012).
Excitement up! Price Down! Measuring Emotions in Dutch Auctions. International Journal of Electronic Commerce, 17(2), 7-39. doi:10.2753/JEC1086-4415170201 [JQ3: B; IF: 2.514; AJG: Grade 3; HB: 0.5]

Krämer, J., & Wiewiorra, L. (2012). 
Beyond the Flat Rate Bias: The Flexibility Effect in Tariff Choice. Telecommunications Policy, 36(1), 29-39. doi:10.1016/j.telpol.2011.11.015 [JQ3: C; IF: 2.087; AJG: Grade 1; HB: 0.15]

Adam, M. T. P., Krämer, J., Jähnig, C., Seifert, S., & Weinhardt, C. (2011).
Understanding Auction Fever: A Framework for Emotional Bidding. Electronic Markets, 21(3), 197-207. doi:10.1007/s12525-011-0068-9 [JQ3: B; IF: 3.818; AJG  Grade 2; HB: 0.1]

Krämer, J. (2009).
Bundling Vertically Differentiated Communications Services to Leverage Market Power. info: The journal for policy, regulation and strategy for telecommunications, information and media,11(3), 64-74. doi:10.1108/14636690910954980

Invited articles in journals and proceedings

Krämer, J. (2023).
Ökonomische Grundlagen der digitalen Plattformregulierung. In F. Säcker, F. Bien, P. Meier-Beck, & F. Montag (Eds.), Münchner Kommentar zum Wettbewerbsrecht (Vol. 1/1, 4th ed., pp. 1735-1763). München: C. H. Beck

Witte, A. & Krämer, J. (2023).
The open display advertising ecosystem: Competition concerns and policy interventions. Competition Policy International. Retrieved from https://www.competitionpolicyinternational.com/wp-content/uploads/2023/06/1-THE-OPEN-DISPLAY-ADVERTISING-ECOSYSTEM-COMPETITION-CONCERNS-AND-POLICY-INTERVENTIONS-Alexander-Witte-Jan-Kramer.pdf

Adam, M. & Krämer, J. (2021)
Understanding Emotions in Electronic Auctions: Insights from Neurophysiology. Market Engineering, pp. 87-98. doi:10.1007/978-3-030-66661-3_5

Krämer, J., Whalley, J. & Batura, O. (2019)
The data economy and data-driven ecosystems: Regulation, frameworks and case studies. Telecommunications Policy. forthcoming. doi:10.1016/j.telpol.2018.12.007 [JQ3: C; IF: 2.087; AJG: Grade 1; HB: 0.15]

Krämer, J., Schnurr, D. & Wohlfarth, M. (2019).
Trapped in the Data-Sharing Dilemma. MIT Sloan Management Review 60(2), 22-23. [JQ3: C; AJG  Grade 3; FT50]

Dinter, B., & Krämer, J. (2018)
Data-driven innovations in electronic markets. Electronic Markets 28(4), 403-405. doi:10.1007/s12525-018-0316-3 

Krämer, J. (2018). 
Datenschutz 2.0 – ökonomische Auswirkungen von Datenportabilität im Zeitalter des Datenkapitalismus. In: Tobias Kretschmer, Lukas Wiewiorra, Jan Krämer, Andreas Oehler, Matthias Horn, Justus Haucap, Stefan Klein, Joschka Hüllmann: Zeitgespräch: Datenkapitalismus – eine ökonomische Betrachtung. Wirtschaftsdienst 98(7), 459-480.

Krämer, J. (2018).
Der Weg in die Gigabit-Gesellschaft bis 2025: Eine Abwägung zwischen technologischer Machbarkeit, tatsächlichem Bedarf und regulatorischer Pfadabhängigkeit. In: Jochen Homann, Torsten J. Gerpott, Wolfgang Briglauer, Ingo Vogelsang, Jan Krämer, Iris Henseler-Unger, Lukas Wiewiorra: In: Ausbau der digitalen Infrastruktur bis 2025: Welche Wege führen in die ›Gigabit-Gesellschaft‹? ifo Schnelldienst 71 (07), 03–21.

Krämer, J., & Schnurr, D. (2016).
Microeconomically Founded Information Systems Research. In M. Bichler & U. Frank (Eds.), Theories in Business and Information Systems Engineering. Business & Information Systems Engineering, 58(4), 291-319. doi:10.1007/s12599-016-0439-z

Krämer, J. (2016).
Herausforderungen bei der Bestimmung von Marktmacht in digitalen Märkten. In: Jan Krämer, Ralf Dewenter, Daniel Zimmer, Iris Henseler-Unger, René Arnold, Christian Hildebrandt, Günter Knieps: Zeitgespräch: Wettbewerbspolitik in der digitalen Wirtschaft. Wirtschaftsdienst 96(4), 231-235.

Krämer, J. (2013).
Deutsche Telekom: Sind Fair-Use-Flatrates wirklich fair? Wirtschaftsdienst,93(5), 282. Kommentar.

Krämer, J., Wiewiorra, L., & Weinhardt, C. (2012).
Net Neutrality in the United States and Europe. CPI Antitrust Chronicle, 3(2), Article 3.

Adam, M. T. P., Krämer, J., Weinhardt, C., & Ehrhart, K.-M. (2010).
Investigating Auction Fever. In: Dreier, T., Krämer, J., Studer, R., Weinhardt, C. (eds.), Information Management and Market Engineering: Vol. II. Studies on eOrganisation and Market Engineering. Karlsruhe: KIT Scientific Publishing. 141-157.

Wiewiorra, L., Krämer, J., Weinhardt, C., & Ehrhart, K.-M. (2010). 
Consumer Perception of Time Based Pricing. In: Dreier, T., Krämer, J., Studer, R., Weinhardt, C. (eds.), Information Management and Market Engineering: Vol. II. Studies on eOrganisation and Market Engineering. Karlsruhe: KIT Scientific Publishing. 179-190.

Krämer, J.; Berninghaus, S.; Weinhardt, C. (2006).
Competing on Many Fronts: Entry Networks in an Economy of Multi-Product Firms. In: Dreier, T., Studer, R., Weinhardt, C. (eds.), Information Management and Market Engineering. Studies on eOrganisation and Market Engineering. Universitätsverlag Karlsruhe. 139-151.

Refereed articles in proceedings (with double-blind review process)

Krämer, J., Shekhar, S., Hofmann, J. (2021).
Regulating Algorithmic Learning in Digital Platform Ecosystems through Data Sharing and Data Siloing: Consequences for Innovation and Welfare. Proceedings of the Forty-Second International Conference on Information Systems, Austin 2021.  [JQ3: A]

Müller, M., Adam, M. T. P., Cornforth, D., Chiong, R., Krämer, J., & Weinhardt, C. (2016).
Selecting Physiological Features for Predicting Bidding Behavior in Electronic Auctions. Proceedings of the 49th Hawaii International Conference on System Sciences (HICSS 2016). Kauai, Hawaii, USA. [JQ3: C]

Krämer, J., & Wiewiorra, L. (2014).
Data Caps and Two-Sided Pricing: Evaluating Managed Service Business Models. Proceedings of the 22nd European Conference on Information Systems (ECIS 2014). Tel Aviv, Israel. [JQ3: B]

Dalen, A., Krämer, J., & Weinhardt, C. (2013).
Determining the Optimal Level of Information Granularity for Efficient Energy Consumption Decisions: Experimental Evidence. Proceedings of the 21st European Conference on Information Systems (ECIS 2013). Utrecht, Netherlands. Paper 201. [JQ3: B]

Astor, P. J., Adam, M. T. P., & Krämer, J. (2012). 
Influence of emotional pictures on bidding behavior. in: Smidts, A., Sanfey, A., Reimann, M., Schilke, O. (eds.), Proceedings of the 2012 NeuroPsychoEconomics Conference. Rotterdam, Netherlands. 18

Ilg, J., Flath, C., & Krämer, J. (2012).
A Note on the Economics of Metered Grid Pricing. Proceedings of the 9th International Conference on the European Energy Market (EEM). Florence, Italy. IEEE Xplore, 1-6.

Adam, M. T. P., Gamer, M., Krämer, J., & Weinhardt, C. (2011).
Measuring Emotions in Electronic Markets. Proceedings of the International Conference on Information Systems 2011 (ICIS). Shanghai, China. Paper 1. [JQ3: A]

Mazarakis, A., & Krämer, J. (2010).
Feedbackmechanismen zur Steigerung der Beteiligung im Web 2.0–Ergebnisse einer Feldstudie zu Vorlesungswikis. in: Schroeder, U. (ed.), Interaktive Kulturen- Workshop-Band. (Duisburg, Germany) Proceedings der Workshops der DeLFI 2010 - Die 8. E-Learning Fachtagung Informatik der Gesellschaft für Informatik e. V. Berlin: Logos Verlag. 187-192.

Seifert, S., Krämer, J., & Mazarakis, A. (2010). 
Anreize zur Nutzung von Wikis in der Hochschullehre - Ergebnisse eines Pilotprojekts. In: Ziegler, J., Schmidt, A. (eds.), Mensch & Computer 2010. (Duisburg, Germany). München: Oldenbourg Wissenschaftsverlag. 179-188

Krämer, J., & Wiewiorra, L. (2010). 
The Taxi Meter Effect: An Experimental Approach. in: de Vreede, G. (ed.), Group Decision and Negotiation 2010. (Delft, Netherlands), 228-231.

Köhler, P., Krämer, J., & Anandasivam, A. (2010)
Cloud Computing: New Business Opportunities for Telecommunications Companies?. Proceedings of the 2010 European Regional ITS Conference. Copenhagen, Denmark.

Krämer, J., & Wiewiorra, L. (2010).
Consumer Perception of Mobile Telephony Tariffs with Cost Caps. Proceedings of the 9th Conference on Telecommunication, Media and Internet Techno-Economics (CTTE). Ghent, Belgium. IEEE Xplore, 1-8. doi:10.1109/ctte.2010.5557703 [Best Paper Award Runner Up]

Elsner, H., & Krämer, J. (2010). 
Einsatz von Recommender Systemen zum Management von Unternehmensportalen. In: Schumann, M., Kolbe, L., Breitner, M., Friedrichs, A. (eds.), Multikonferenz Wirtschafsinformatik 2010. Universitätsverlag Göttingen. 1819-1830. [JQ3: D]

Blau, B., Krämer, J., Conte, T., & van Dinther, C. (2009).
Service Value Networks. In: Hofreiter, B., Werthner, H. (eds.), Proceedings of the 11th IEEE Conference on Commerce and Enterprise Computing. Vienna, Austria. IEEE Computer Society. 194-201. doi:10.1109/CEC.2009.64 

Krämer, J. (2007).
Digital Convergence, Pricing Strategies and Firms' Profits in the Telecommunication and Entertainment Media Industry. Proceedings of the 6th Conference on Telecommunication, Media and Internet Techno-Economics (CTTE). Helsinki, Finland. IEEE Xplore, 1-8. doi:10.1109/CTTE.2007.4389896

Monographs/Books

Gimpel, H., Krämer, J., Neumann, D., Pfeiffer, J., Seifert, S., Teubner, T., Veit, D., & Weidlich, A. (2021)
Market Engineering, Cham: SpringerNature Switzerland AG. 243 p.
doi:10.1007/978-3-030-66661-3

Krämer, J. (ed.). (2020). 
Digital Markets and Online Platforms: New Perspectives on Regulation and Competition Policy.  Brussels: Centre on Regulation in Europe. 104 p. 
https://cerre.eu/wp-content/uploads/2020/11/CERRE_Digital-markets-and-online-platforms_new-perspectives-on-regulation-and-competition-law_November2020.pdf

Krämer, J. (2013).
Tariffication, Prioritization and Regulation: Eight Essays on Telecommunications Markets. Unveröffentlichte Habilitationsschrift. Karlsruhe Institute of Technology. 250 p.

Spiecker gen. Döhmann, I., & Krämer, J. (eds.). (2011). 
Network Neutrality and Open Access. Baden Baden: Nomos Verlag. 214 p.
[Buchbesprechung durch Hunziker, M. in Archiv für Urheber- und Medienrecht (UFITA), 2012(2), 604-606]

Dreier, T., Krämer, J., Studer, R., & Weinhardt, C. (eds.). (2010). 
Information Management and Market Engineering: Vol. II. Studies on eOrganisation and Market Engineering. No. 11. Karlsruhe: KIT Scientific Publishing. 260 p.

Krämer, J., & Seifert, S. (eds.) (2009). 
Communications Regulation in the Age of Digital Convergence: Legal and Economic Perspectives. Karlsruhe: Universitätsverlag Karlsruhe. 110 p.

Krämer, J. (2009). 
Bundling Telecommunications Services: Competitive Strategies for Converging Markets. Karlsruhe: Universitätsverlag Karlsruhe. 174 p.

Krämer, J. (2009). 
The Conference Scheduling Problem. Saarbrücken: VDM Verlag. 160 p.

Book reviews

Krämer, J. (2013).
Regulating the Web [Review of the book: Regulating the Web: Network Neutrality and the Fate of the Open Internet, by Zack Stiegler (ed.). Lexington Books, Plymouth, UK (2013). vii+257 pp., Hardcover, ISBN 978-0-7391-7868-3], Telecommunications Policy38(11), 1183–1184.

Policy Reports

Krämer, J.; Colangelo, G.; Richter, H.; Schnurr, D. (2023).
Data Act: Towards a Balanced EU Data Regulation, Centre on Regulation in Europe: Brussels,
https://cerre.eu/publications/data-act-towards-a-balanced-eu-data-regulation/

Krämer, J. (2023).
Data Access Provisions in the DMA. Centre on Regulation in Europe (CERRE) Report, 01/2023.
https://cerre.eu/publications/effective-and-proportionate-implementation-of-the-dma-3/

Krämer, J. (2022).
Improving the Economic Effectiveness of the B2B and B2C Data Sharing Obligations in the Proposed Data Act. Centre on Regulation in Europe (CERRE) Report, 11/2022.
https://cerre.eu/publications/improving-the-economic-effectiveness-of-the-b2b-and-b2c-data-sharing-obligations-in-the-proposed-data-act/

Krämer,  J. (ed.) (2022).
Prospects for Harmonization of Global Data Governance. In: Lamy, P., Liebhaberg, B. et al. (eds.), Global Governance for the  Digital Ecosystems. Preserving Convergence and Organising Co-Existence. Centre on Regulation in Europe (CERRE), Brussels
https://cerre.eu/wp-content/uploads/2022/11/GGDE_FulIReport.pdf

Busch, C., Fourberg, N., Krämer, J., Kroon, P., Steffen, N., Tas, S., Thoste, P., Wiewiorra, L. (2022)
Interoperability regulations for digital services , WIK-Consult Report, 0892022.
https://www.bundesnetzagentur.de/DE/Fachthemen/Digitalisierung/Technologien/Onlinekomm/Study_InteroperabilityregulationsDigiServices.pdf?__blob=publicationFile&v=1

Bourreau, M., Krämer, J. & Buiten, M. (2022)
Interoperability in Digital Markets. Centre on Regulation in Europe (CERRE) Policy Report, 03/2022.
https://cerre.eu/wp-content/uploads/2022/03/220321_CERRE_Report_Interoperability-in-Digital-Markets_FINAL.pdf

Feasey, R., Krämer, J., (2021)
Device Neutrality: Openness, non-discrimination and transparency on mobile devices for general internet access. Centre on Regulation in Europe (CERRE) Policy Report, 06/2021.
https://cerre.eu/events/device-neutrality-regulating-mobile-devices/

de Streel, A., Feasey, R., Krämer, J., & Monti, G. (2021)
Making the Digital Markets Act More Resilient and Effective.Centre on Regulation in Europe (CERRE) Policy Report, 05/2021.
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3853991

de Streel,A., Liebhaberg,B., Fletcher,A., Feasey,R., Krämer,J., & Monti,G. (2021)
The European proposal for a Digital Markets Act: A first assessment. Centre on Regulation in Europe (CERRE) Policy Report, 01/2021.
https://cerre.eu/publications/the-european-proposal-for-a-digital-markets-act-a-first-assessment/

Krämer, J.,  Schnurr, D. & Broughton Micova, S. (2020)
The role of data for digital markets contestability: case studies and data access remedies. Centre on Regulation in Europe (CERRE) Policy Report, 09/2020.
https://cerre.eu/wp-content/uploads/2020/08/cerre-the_role_of_data_for_digital_markets_contestability_case_studies_and_data_access_remedies-september2020.pdf

Krämer, J., Senellart, P., & de Streel, A. (2020)
Making data portability more effective for the digital economy. Centre on Regulation in Europe (CERRE) Policy Report, 06/2020.
https://cerre.eu/wp-content/uploads/2020/07/cerre_making_data_portability_more_effective_for_the_digital_economy_june2020.pdf

Feasey, R., Krämer, J. (2019)
Implementing effective remedies for anti-competitive intermediation bias on vertically integrated platforms. Centre on Regulation in Europe (CERRE) Policy Report, 10/2019.
https://cerre.eu/wp-content/uploads/2020/05/cerre_report_intermediation_bias_remedies.pdf

Krämer, J. (2019)
Device Neutrality: The Missing Link for Fair and Transparent Online Competition?. Centre on Regulation in Europe (CERRE) Policy Report, 03/2019.
https://cerre.eu/wp-content/uploads/2020/05/CERRE_DeviceNeutrality_IssuePaper_March2019.pdf

Krämer, J., Peitz, M. (2018)
A Fresh Look at Zero-Rating. Centre on Regulation in Europe (CERRE) Policy Report, 03/2018.
https://cerre.eu/wp-content/uploads/2020/06/CERRE_ZeroRating_FinalReport.pdf

Krämer, J., Schnurr, D., de Streel, A. (2017)
Internet Platforms and Non-Discrimination. Centre on Regulation in Europe (CERRE) Policy Report, 12/2017.
https://cerre.eu/wp-content/uploads/2020/06/171205_CERRE_PlatformNonDiscrimination_FinalReport.pdf

Bourreau, M., & Krämer, J.
Interoperability in Digital Markets: Boon or Bane for Market Contestability?
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4172255

Krämer, J., & Shekhar, S.
Regulating Algorithmic Learning in Digital Platform Ecosystems through Data Sharing and Data Siloing: Consequences for Innovation and Welfare
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4163171

Haberer, B., Krämer, J., & Schnurr, D.
Do Consumers Benefit from Selling their Data? The Economic Impact of Personal Data Brokers on Digital Markets
https://ssrn.com/abstract=3141946

Krämer, J., & Zierke, O. 
Paying for prominence: The effect of sponsored rankings on the incentives to invest in the quality of free content on dominant online platforms
https://papers.ssrn.com/abstract=3584371

Haberer, B., Krämer, J., & Schnurr, D. 
Standing on the Shoulders of Web Giants: The Economic Effects of Personal Data Brokers
https://papers.ssrn.com/abstract=3141946

Horstmann, N., Krämer, J., & Schnurr, D. 
Wholesale Competition, Open Access Regulation and Tacit Collusion: Experimental Evidence
http://ssrn.com/abstract=2630660

Horstmann, N., Krämer, J., & Schnurr, D. 
Oligopoly Competition in Continuous Time 
http://ssrn.com/abstract=2630664

Horstmann, N., & Krämer, J. 
Tacit collusion under multimarket contact with identical firms and markets. Mimeo. Presented under the title "Price Signaling and Tacit Collusion under Multimarket Contact" at the 41st Annual Conference of the European Association for Research in Industrial Economics (EARIE) in Milan, Italy, 2014.
http://ssrn.com/abstract=2469452

Krämer, A., & Krämer, J. 
Flexibility of Delivery Frequency in Logistics Competition. Working Paper, Karlsruhe Institute of Technology.
http://ssrn.com/abstract=1583015

Krämer, J., Conte, T., Blau, B., van Dinther, C., & Weinhardt, C. 
Service Value Networks: Unleashing the Combinatorial Power of Service Mashups. Working Paper, Karlsruhe Institute of Technology.
http://ssrn.com/abstract=1582902

• DFG; Research Training Group 2720 "Digital Platform Ecosystems" (Director, 2022-2027)
• DFG; Research Grant: "Platform Neutrality and Data-Driven Business Models: B2B Data Sharing as Payment for Prominence of Content Providers on Online Platforms" (Principal Investigator, 2020-2022)
• DFG; Research Training Group 895 "Information and Market Engineering" (Managing Post-Doc, 2008-2010) 
• Ministry for Science, Research and Arts Baden-Württemberg; Research Seed Capital (RISC): "Optimal Design and Choice of Communications Tariffs" (Principal Investigator, 2010-2012)
• NET Institute; Summer Grant: "Net Neutrality and Minimum Quality Standards" (Principal Investigator, 2010)
• DFG; Research Grant: "Choice, Perception and Use of Tariffs with Cost Caps" (Principal Investigator, 2012-2014)
• Federal Ministry of Education and Research: "Cooperative Regimes for Future Climate Policies" (Investigator, 2012-2015)
• Deutsche Telekom AG: "Behavioral Telecommunications Regulation" (Principal Investigator, 2012-2014)
• Deutsche Telekom AG: „Regulation of Digital Content and Services" (Principal Investigator, 2015-2017)
• Federal Ministry of Economic Affairs and Energy: „Regulatory framework for the digital economy“ (2015-2016)

• Management Science: Associate Editor (2022 - )
• Business & Information Systems Engineering: Associate Editor (2016 - )
• Review of Network Economics: Editorial Board Member (2016 - )
• Electronic Markets: Guest Editor for Special Issue "Data-Driven Innovations" (2017-2018)
• Telecommunications Policy: Editorial Board Member (2018 - ); Guest Editor for Special Issue “Data Economy and Data-Driven Ecosystems” (2017-18)  
• Information Economics and Policy: Associate Editor (2019 - )

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