1. Cisco: Cisco Visual Networking Index: Forecast and Methodology, 2012–2017. [online document], White Paper, Nov 2014
2. Rapone, D., Sabella, D., Fodrini, M.: Energy efficiency solutions for the mobile network evolution towards 5G: an operator perspective. In: Sustainable Internet and ICT for Sustainability (SustainIT), 14–15 Apr 2015
3. EARTH project deliverable D2.3: Energy efficiency analysis of the reference systems, areas of improvements and target breakdown.
https://bscw.ict-earth.eu/pub/bscw.cgi/d71252/EARTH_WP2_D2.3_v2.pdf
4. EARTH project deliverable D6.4: Final integrated concept.
https://bscw.ict-earth.eu/pub/bscw.cgi/d49431/EARTH_WP6_D6.4.pdf
5. ETSI ES 203 228 V1.0.0 (2015-01): Assessment of mobile network energy efficiency. ETSI Environmental Engineering (EE), Jan 2015.
http://www.etsi.org/deliver/etsi_es/203200_203299/203228/01.00.00_50/es_203228v010000m.pdf