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Telecommunications Policy > 2016 > 40 > 5 > 398-411
Technovation > 2002 > 22 > 8 > 517-524
Japan & The World Economy > 2002 > 14 > 3 > 321-333
Telecommunications Policy > 2016 > 40 > 5 > 398-411
Technovation > 2002 > 22 > 8 > 517-524
Japan & The World Economy > 2002 > 14 > 3 > 321-333