Sepstrup, Preben. “Porter: ‘Beyond the Berner Convention: Copyright, Broadcasting and the Single European Market’ Tunsall and Palmer: Media Moguls Østergaard (red.): The Media in Western Europe Siune and Treutzschler (red.): Dynamics of Media Politics”. MedieKultur: Journal of media and communication research 8, no. 19 (August 29, 1992): 3 pages. Accessed October 12, 2025. https://www.mediekultur.dk/article/view/957.