Historical examples (ISDN, Teletex, telefax, telex) show us that forecasting efforts in thetelecommunication sector can go awry – not only by a few percentage points but by largemagnitudes. We maintain that with strong network effects it is not possible to forecast thesuccess of...

In this article we provide a seminal academic investigation of mo-bile telephony consumers' perception of the recently introduced costcap tari in comparison to corresponding pay-per-use and atrate call-ing plans. Previous studies have identied several psychological eectsthrough which consumers...

Website der deutschen Tageszeitung "Die Welt". [Redaktion EconBiz]Das kostenfreie Archiv von WELT online beinhaltet alle Artikel, die seit Mai 1995 in der Internetausgabe der WELT erschienen sind. Das kostenfreie E-Paper-Archiv enthält alle Ausgaben von Die Welt und Die Welt am Sonntag seit...

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In order to con¯ne excessive levels of temporary layo®s, US ¯rms are taxed - albeit incom-pletely - according to the unemployment insurance bene¯ts claimed by their laid o® workers.In contrast, German construction ¯rms are not charged according to their layo® historyand should thus have...