1. Giles T, Markendahl J, Zander J, Zetterberg P, Karlsson P, Malmgren G, Nilsson J: Cost drivers and deployment scenarios for future broadband wireless networks—key research problems and directions for research. IEEE 59th Vehicular Technol Conference, VTC 2004-Spring 2004, 4: 2042-2046. 17–19 May 2004, Milan (Italy)
2. Femto F: Femtocells—Natural solution for offload, white paper (June 2010). Available at
http://www.smallcellforum.org/resources-white-papers#Offload
3. Analysys Mason: Wireless network traffic 2010–2015: Forecast and analysis (23rd July 2010). Report available at
http://www.analysysmason.com/Research/Custom/Reports/RDTN0_Wireless_traffic_forecast
4. Valcarce A, Lopez-Perez D, de La Roche G, Jie Z: Limited access to OFDMA femtocells. IEEE 20th Int Symp Personal, Indoor and Mobile Radio Commun 2009, 1-5. 13 – 16 September 2009, Tokyo (Japan)
5. López-Pérez D, Valcarce A, de la Roche G, Jie Z: OFDMA femtocells: a roadmap on interference avoidance. IEEE Commun Mag 2009, 47: 41-48.