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Wöchentlicher Wettbewerb um die Zielgruppe 40+ : Thema Gesundheit in wöchentlichen Frauenzeitschriften
Hausendorf, Jörg, (2009)
The effects of website provision on the demand for German women's magazines
Kaiser, Ulrich, (2001)
Optimal cover prices and the effects of website provision on advertising and magazine demand
Kaiser, Ulrich, (2002)