• Another tale of two-sided markets 

    Kind, Hans Jarle; Stähler, Frank
    This note generalizes the frequently used Hotelling model for two-sided markets. We demonstrate an invariance theorem: advertisement levels neither depend on the media price nor on the location of the media firm. An increase ...
  • Newspapers and advertising: The effects of ad-valorem taxation under duopoly. 

    Kind, Hans Jarle; Schjelderup, Guttorm; Stähler, Frank
    Newspapers are two-sided platforms that sell their product both to readers and advertisers. Media firms in general, and newspapers in particular, are considered important providers of information, culture and language in ...