BUSINESS MODELS OF THREE BULGARIAN TRADITIONAL MEDIA IN THE DIGITAL ERA. Proceedings of the World Conference on Media and Mass Communication, [S. l.], v. 9, n. 01, p. 60–77, 2025. DOI: 10.17501/24246778.2025.9105. Disponível em: https://proceedings.tiikmpublishing.com/index.php/medcom/article/view/1719. Acesso em: 6 oct. 2025.