1. Wu, C., Ho, J., Chen, M.: A Scalable Server Architecture for Mobile Presence Services in Social Network Applications. IEEE Trans. Mobile Comput. (99), 1
2. Roach, A.B., Campbell, B., Rosenberg, J.: A Session Initiation Protocol (SIP) Event Notification Extension for Resource Lists, IETF RFC 4662 (August 2006)
3. Peer-to-peer Session Initiation Protocol (P2PSIP), Working Group Charter,
http://datatracker.ietf.org/wg/p2psip/charter
4. Imran, K., Jensen, T.: Bottlenecks Elimination and Performance Enhancements in IMS Presence Service. In: Proc. of Australasian Telecommunication Networks and Applications Conference (ATNAC), pp. 1–7 (November 2011)
5. Application-Layer Traffic Optimization (ALTO). Working Group Charter,
http://datatracker.ietf.org/wg/alto/charter