1. IDE wiki 2008: http://digitaleconomy.computing.dundee.ac.uk, accessed December 2008
2. Negroponte, N.: ‘Being digital’, (Vintage Books, New York 1995)
3. CEC (C. o. t. E. Communities): ‘GDP and beyond. Measuring progress in a changing world’. Communication from the Commission to the Council and the European parliament, 2009