Analysis of Business Overview and use of 'C'group's Internet phone of National Information and Communication Services
국가정보통신서비스의 'C'그룹 인터넷전화 사업현황과 이용 분석

Jin Shin, Dea-Woo Park
2011 The Journal of the Korean Institute of Information and Communication Engineering  
doi:10.6109/jkiice.2011.15.11.2391 fatcat:a3dlboytxjct5dz67typfxq5uu