By Lee Heejin   Oh Sangjo   Shim Yongwoon   in Info - The journal of policy, regulation and strategy for telecommunications

ISSN:1465-9840|7|4|47-56

Emerald Group Publishing Ltd‎(2005)‎

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By Shim Yongwoon   Lee Heejin   Yun Kyounglim   in International Journal of Advanced Media and Communication

ISSN:1462-4613|1|2|122-138

Inderscience Publishers‎(2006)‎

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