Media type: E-Article Title: Positive, Negative, and Amplified Network Externalities in Platform Markets Contributor: Karhu, Kimmo; Heiskala, Mikko; Ritala, Paavo; Thomas, Llewellyn D. W. Published: Academy of Management, 2024 Published in: Academy of Management Perspectives, 38 (2024) 3, Seite 349-367 Language: English DOI: 10.5465/amp.2023.0119 ISSN: 1558-9080; 1943-4529 Origination: Footnote: