Media Plurality and the Intensity of Readers' Political Preferences
Armando Garcia Pires
Journal Of Media Economics, vol. 26, 2013, p. 41-55.

Industry Concentration and Strategic Trade Policy in Successive Oligopoly
Gjermund Nese, Odd Rune Straume
Journal of Industry, Competition and Trade, vol. 7, 2007, p. 31-52.

Downstream Merger with Upstream Market Power
Kjell Erik Lommerud, Odd Rune Straume, Lars Sorgard
European Economic Review, vol. 49, 2005, p. 717-743.