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Argentesi, Elena and Ivaldi, MarcORCID: https://orcid.org/0000-0002-4244-7690 (2007) Market definition in printed media Industries : theory, practice and lessons for broadcasting. In: The economic regulation of broadcasting markets: evolving technology and the challenges for policy Seabright, Paul and Von Hagen, Jurgen (eds.) Cambridge University Press. Cambridge pp. 225-254. ISBN 9780521874052