Vitali Gretschko: CV and publications

Selected publications

Worst-Case Equilibria in First-Price Auctions Theoretical Economics 19(1), 61–93, 2024 with Helene Mass
Incomplete Contracts in Multi-period Procurement Management Science 68(7), 5146–5161, 2022 with Martin Pollrich
Social Norms, Sanctions, and Conditional Entry in Markets with Externalities: Evidence from an Artefactual Field Experiment Journal of Public Economics 212, 104701, 2022 with Tobias Riehm, Nicolas Fugger, Philippe Gillen, Peter Werner

Working paper

Revise & resubmit · Journal of Political Economy

Stable Contracts under Renegotiation with Achim Wambach · PDF, October 2026

We study a principal contracting with a privately informed agent, where any contract is subject to renegotiation. Rather than specifying a renegotiation game, we propose conditions that the set of terminal outcomes of renegotiation must satisfy.

All publications

Peer-reviewed Working papers Book chapters Policy & reports In progress

Peer-reviewed articles 12

2024
Worst-Case Equilibria in First-Price Auctions Theoretical Economics 19(1), 61–93 with Helene Mass
2022
Information Design in Sequential Procurement Games and Economic Behavior 135, 79–85 with Nicolas Fugger, Martin Pollrich
2022
Social Norms, Sanctions, and Conditional Entry in Markets with Externalities: Evidence from an Artefactual Field Experiment Journal of Public Economics 212, 104701 with Tobias Riehm, Nicolas Fugger, Philippe Gillen, Peter Werner
2022
Incomplete Contracts in Multi-period Procurement Management Science 68(7), 5146–5161 with Martin Pollrich
2020
Imitation Perfection—A Simple Rule to Prevent Discrimination in Procurement American Economic Journal: Microeconomics 12(3), 189–245 with Helene Mass, Nicolas Fugger, Achim Wambach
2019
A Procurement Mechanism to Assign Refugee Quotas Journal of Institutional and Theoretical Economics 175(1), 53–57 sole author
2017
Bargaining in Spectrum Auctions: A Review of the German Auction in 2015 Telecommunications Policy 41(5–6), 325–340 with Martin Bichler, Maarten Janssen
2017
Pre-Auction or Post-Auction Qualification? Economic Theory Bulletin 5(2), 139–150 with Philippe Gillen, Alexander Rasch
2016
Procurement under Public Scrutiny: Auctions versus Negotiations RAND Journal of Economics 47(4), 914–934 with Achim Wambach
2015
Excess Information Acquisition in Auctions Experimental Economics 18(3), 335–355 with Alexander Rajko
2014
Information Acquisition during a Descending Auction Economic Theory 55(3), 731–751 with Achim Wambach
2014
On the Strictly Descending Multi-Unit Auction Journal of Mathematical Economics 50, 79–85 with Alexander Rasch, Achim Wambach

Working papers 5

2026
Stable Contracts under Renegotiation Revise & resubmit at the Journal of Political Economy with Achim Wambach
2025
Auctions vs. Negotiations: The Role of Communication in an Experiment with Procurement Managers ZEW Discussion Paper 25-039 with Nicolas Fugger, Philippe Gillen, Gian-Marco Kokott, Tobias Riehm
2024
An Efficient Dynamic Mechanism with Covert Information Acquisition ZEW Discussion Paper 24-081 with Jasmina Simon
2019
Sequential Procurement with Limited Commitment ZEW Discussion Paper 19-030 with Nicolas Fugger, Martin Pollrich
2015
Common Values and the Coase Conjecture: Inefficiencies in Frictionless Contract (Re-)Negotiation Verein für Socialpolitik, Annual Conference paper with Achim Wambach

Book chapters 2

2018
Nachhaltige Geschäftsmodelle im Einkauf: Eine FallstudieDE in CSR und Geschäftsmodelle, Springer Gabler, 363–376 with Florian Haas
2017
Bidding Complexities in the Combinatorial Clock Auction in Handbook of Spectrum Auction Design (eds. M. Bichler, J. Goeree), Cambridge University Press, 731–747 with Stephan Knapek, Achim Wambach

Policy articles & reports 10

2024
Optimierung des Verhandlungsgebots auf dem TelekommunikationsmarktDE Wirtschaftsdienst 104(11), 794–799 with Axel Ockenfels, Achim Wambach
2023
Empfehlungen für das Marktdesign zur Befüllung der GasspeicherDE Wirtschaftsdienst 103(2), 105–111 with Axel Ockenfels
2022
Bewertung des GasauktionsmodellsDE FES diskurs, Friedrich-Ebert-Stiftung with Julius Ecke, Tim Höfer
2021
Electricity Market Design 2030–2050: Moving Towards Implementation Kopernikus project SynErgie, white paper with the SynErgie project group
2021
Stellungnahme zu Grundsätzen und Szenarien für die Bereitstellung der MobilfunkfrequenzenDE ZEW-Kurzexpertise 21-07, for the Bundesnetzagentur with Achim Wambach
2021
Ein flexibles Vergütungskonzept für Mediziner hilft, Herdenimmunität gegen COVID-19 zu erreichenDE ZEW policy brief 21-03 with Marion Ott
2021
Electricity Spot Market Design 2030–2050 Kopernikus project SynErgie, white paper with the SynErgie project group
2019
Die Regeln machen den Unterschied: MarktdesignDE Wirtschaftswissenschaftliches Studium (WiSt) 48(4), 22–28 with Thilo Klein, Achim Wambach
2016
Beschaffungskonflikte: Volkswagen und seine ZuliefererDE Wirtschaftsdienst 96(9), 626–627 with Nicolas Fugger, Philippe Gillen
2013
Spectrum Aggregation Limits in Auctions with Spectrum below 1 GHz: The European Experience Report filed with the FCC with Stephan Knapek, Achim Wambach

Work in progress 2

Large Language Models and Dominant Strategies with Jasmina Simon
Auctions for Green Investment with Philip Zilke