1. 3GPP TR 23.815 V5.0.0 (2002-03). Technical Specification Group, Services and System Aspects; Charging implications of IMS architecture, Release 5 (2002)
2. 3GPP2 C.S0001-0. Introduction to CDMA2000 Standards for Spread Spectrum Systems, Release 0, Version 1.0 (July 1999)
3. 3GPP2 C.S0001-D. Introduction to CDMA2000 Standards for Spread Spectrum Systems, Release D. Version 1.0 (February 2004)
4. 3GPP2 C.S0024. CDMA2000 High Rate Packet Data Air Interface Specification, Release 0, Version 4.0 (October 2002)
5. 3GPP2 C.S0024-A. CDMA2000 High Rate Packet Data Air Interface Specification, Release A. Version 2.0 (July 2005)