Institution: | aCollege of Business Administration, Sejong University, 98 Kunja-dong, Kwangjin-gu, Seoul 143-747, Republic of Korea;bDepartment of e-Business, Hanshin University, 411, Yangsan-dong, Osan, Kyunggi 447-791, Republic of Korea;cGraduate School of Management, Korea Advanced Institute of Science and Technology, 207-43, Cheongryangri-dong, Dongdaemoon-gu, Seoul 130-012, Republic of Korea |