1. 3GPP, Technical Specification Group 23.907, Services and System Aspects, QoS Concepts
2. 3GPP, Combined GSM and Mobile IP Mobility Handling in UMTS IP CN 3G TR 23.923, V3.0, 2000-05
3. 3GPP, Study on Rel. 2000 Services and Capabilities (3G TS 22.796), V2.0.0, 2000-06
4. 3GPP, Technical Specification Group Radio Access Network; Requirements for Evolved UTRA (E-UTRA) and Evolved UTRAN (E-UTRAN) (Release 9), 3GPP technical report V9, 2009-12
5. 3GTS, 25.213, Spreading and Modulation (FDD)