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2019
Berkmann, Manuel
(2019).
Essays on Customer Engagement Strategies and Tactics in Business and Consumer Markets.
PhD thesis, Universität zu Köln.
Wichmann, Julian Raphael Klaus 
ORCID: 0000-0003-0205-5243
(2019).
The Evolving Brand-Consumer Relationship - The Impact of Business Cycles, Digital Platforms, and New Advertising Technologies.
PhD thesis, Universität zu Köln.
2017
Becker, Maren
(2017).
Advertising effectiveness: the role of content.
PhD thesis, Universität zu Köln.
Ptok, Annette
(2017).
Essays in Marketing Strategy: The Role of Customer Integration, Marketing Metrics, and Advertising Effectiveness.
PhD thesis, Universität zu Köln.
2015
Serafin, Marcin
(2015).
The Temporal Structures of the Economy:
The Working Day of Taxi Drivers in Warsaw.
PhD thesis, Universität zu Köln.