1. Radio goes digital;McWilliams;Wall Street J.,2005
2. Korean Ministry of Information and Communication: http://www.mic.or.kr/anuanlreport/2004.
3. D. MacKenzie, J. Wajcman, The Social Shaping of Technology, Second edition. Philadelphia, and Milton Keynes: Open University Press (1999).
4. DMB is rising in Korea;Hally;Dig. times,2005
5. Broadband and mobile opportunities: a sociotechnical perspective;Sawyer;J. Inf. Technol.,2003