1. Femto Forum,
http://www.femtoforum.org/femto/
2. 3rd Generation Partnership Project,
http://www.3gpp.org/
3. Claussen, H., Lester, H., Louis, G.S.: An Overview of the Femtocell Concepts. Bell Labs Technical Journal 13(1), 221–246 (2008)
4. 3rd Generation Partnership Project: HNB/HeNB Access Control. 3GPP TD S2-090733 (2009)
5. 3rd Generation Partnership Project: General packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access. 3GPP TS 23.401 (2009)