1. Ericsson AB, "Traffic Exploration Tool," Online tool. Available at: http://www.ericsson.com/TET/trafficView/loadBasicEditor.ericsson.
2. Present and Future of Terahertz Communications;Song,2011
3. Report M.2320 – Future Technology Trends of Terrestrial IMT Systems;Int Telecom Union – Radiocom Sector (ITU-R),2014
4. Final Acts - World Radiocommunication Conference (WRC-15);Int Telecom Union – Radiocom Sector (ITU-R),2015
5. “The Future of Wireless: a Vision for U.S. Leadership in a 5G World”, Washington, D.C;Tom Wheeler (FCC Chairman),2016