By Lee Hakyeon   in Journal of Engineering Design

ISSN:1466-1837|21|1|75-91

Taylor & Francis Ltd‎(2010)‎

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By Lee Changyong   Lee Hakyeon   in The Service Industries Journal

ISSN:0264-2069|35|6|345-361

Routledge Ltd‎(2015)‎

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By Kim Chulhyun   Lee Hakyeon   in International Journal of Mobile Communications

ISSN:1470-949X|10|3|248-264

Inderscience Publishers‎(2012)‎

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By Suh Yongyoon   Lee Hakyeon   Park Yongtae   in International Journal of Mobile Communications

ISSN:1470-949X|10|1|1-20

Inderscience Publishers‎(2012)‎

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