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Technological Forecasting & Social Change > 2012 > 79 > 4 > 607-619
European Journal of Political Economy > 2009 > 25 > 1 > 102-114
Information Economics and Policy > 2004 > 16 > 1 > 1-11
Technological Forecasting & Social Change > 2012 > 79 > 4 > 607-619
European Journal of Political Economy > 2009 > 25 > 1 > 102-114
Information Economics and Policy > 2004 > 16 > 1 > 1-11