Submitted on: 18 July 2006.
Revised on: 14 November 2006.
Accepted on: 29 December 2006.
___________________EUROPEAN JOURNAL OF INFORMATION SYSTEMS
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Submitted on: 16 May 2012.
Revised on: 15 July 2012.
Accepted on: 04 August 2012.
___________________EUROPEAN JOURNAL OF INFORMATION SYSTEMS
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