1. 3GPP TR 36.814. Further advancements of E-UTRA: physical layer aspects, ver. 0.4.0; March 2010.
2. 3GPP TS 32.500. Telecommunication management; Self-Organizing Networks (SON); Concepts and requirements. ver. 11.1.0; December 2011.
3. 3GPP TR 36.839. E-UTRA; mobility enhancements in heterogeneous networks. ver. 0.5.0; March 2012.
4. 3GPP TS 36.423. E-UTRAN; X2-AP. ver. 11.4.0; March 2013.
5. 3GPP TS 23.401. General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Access. ver. 12.2.0; September 2013.