1. Nokia Siemens Networks: “High capacity mobile broadband for mass events” .Available: http://br.nsn.com/file/25236/high-capacity-mobile-broadband-for-mass-events.
2. Femtocell networks: a survey;Chandrasekhar;IEEE Commun. Magazine,2008
3. An overview of the femtocell concept;Claussen;Bell Labs Tech. J.,2008
4. Hybrid Access Control Mechanism in Two-Tier Femtocell Networks;Mantravadi,2012
5. International Telecommunications Union, “Key global telecom indicators for the world telecommunication service sector." http://www.itu.int/ITU-D/ict/statistics/at_glance/KeyTelecom.html.