1. 3GPP TS 35.201, “Technical Specification Group Services and System Aspects; 3G Security; Specification of the 3GPP Confidentiality and Integrity Algorithms,” http://www.3gpp.org .
2. 3GPP TS 35.206, “3G Security Specification of the 3GPP Confidentiality and Integrity Algorithms,” http://www.3gpp.org .
3. 3GPP TS 23.228, “IP Multimedia Subsystem (IMS) Stage 2,” http://www.3gpp.org .
4. 3GPP TS 31.102, “Identity Module (USIM) application,” http://www.3gpp.org .
5. 3GPP2 S.P0086-B, “IMS Security Framework,” http://www.3gpp2.org .