Universität zu Köln

Kleer, Nicola ORCID: 0000-0003-2120-4902 (2023). Antecedents and Consequences of the Engagement Concept. PhD thesis, Universität zu Köln.

Kleer, Nicola and Kunz, Reinhard E. (2021). The Impact of Actor Engagement on the Business Models of Video Game Developers. JMM-Int. J. Media Manag., 23 (3-4). S. 204 - 238. ABINGDON: ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD. ISSN 1424-1250

O'Brien, Daniel, Wellbrock, Christian-Mathias and Kleer, Nicola (2020). Content for Free? Drivers of Past Payment, Paying Intent and Willingness to Pay for Digital Journalism - A Systematic Literature Review. Digit. Journal., 8 (5). S. 643 - 673. ABINGDON: ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD. ISSN 2167-082X

O'Brien, Daniel ORCID: 0000-0002-5836-5972, Wellbrock, Christian-Mathias ORCID: 0000-0003-4961-9421, Kunz, Reinhard E. and Kleer, Nicola (2022). The Digital Transformation of the News Media Business – Paid Content and Entrepreneurship in Digital Journalism. PhD thesis, Universität zu Köln.

Wenzel, Sina, Kleer, Nicola and Kunz, Reinhard E. . Customer engagement behavior in the media and technology industry: a quantitative content analysis of content types and COVID-19 context. J. Media Bus. Stud.. ABINGDON: ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD. ISSN 2376-2977