Conferencing service interworking between overlays and IMS networks. - Jinsub Sim; Tuan Hao Tieu; Younghan Kim 002 (ICOIN, 2011)

PTT Service Interworking Between IMS Based Networks and P2P Overlay Networks. - Tuan Hao Tieu; Younghan Kim 002; Gwangyong Gim (KSII Trans. Internet Inf. Syst., 2013)