1. 3GPP TR 23.880. Release 8, version 0.1.0, Stage2 for registration in densely-populated area (RED). 〈http://www.3gpp.org/ftp/specs/archive/23_series/23.880/〉; 2007.
2. 3GPP TS 23.002. Release 9, version 9.1.0, Network architecture.〈http://www.3gpp.org/ftp/specs/archive/23_series/23.002/〉; 2009.
3. 3GPP TS 23.401. Release 8, version 8.6.0, General Packet Radio Services (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access.〈http://www.3gpp.org/ftp/specs/archive/23_series/23.401/〉; 2009.
4. 3GPP TS 32.500. Release 8, version 8.0.0, Self organizing networks (SON), concepts and requirements.〈http://www.3gpp.org/ftp/specs/archive/32_series/32.500/〉; 2008.
5. 3GPP TS 36.902. Release 8, version 1.0.1, Self-configuring and self-optimizing network use cases and solutions. 〈http://www.3gpp.org/ftp/specs/archive/36_series/36.902/〉; 2008.