By Kolo Castulus   in Electronic Markets

ISSN:1019-6781|16|1|16-27

Routledge Ltd‎(2006)‎

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By Kolo Castulus   Vogt Patrick   in The International Journal on Media Management

ISSN:1424-1277|5|4|251-261

Institute for Media and Communications Management, University of St Gallen, Switzerland‎(2003)‎

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