1. Special emergency session of the broadband commission pushes for action to extend internet access and boost capacity to fight COVID19. https://www.itu.int/en/mediacentre/Pages/PR05-2020 Broadband Commission-emergency-session-internet-COVID-19.aspx, online. Accessed 20 Apr 2020
2. Cisco visual networking index Global mobile data traffic forecast update, 2018–2023. https://www.cisco.com/c/en/us/solutions/collateral/executive-perspectives/annual-internet-report/white-paper-c11-741490.html
3. Gavrilovska L, Denkovski D, Rakovic V, Angjelichinoski M (2014) Medium access control protocols in cognitive radio networks: overview and general classification. IEEE Commun Surveys Tutor 16(4):2092–2124
4. FCC (2002) Spectrum policy task force. Technical report 02–135, Rep. ET Docket, Federal Communications Commission
5. Shared Spectrum Company (2010) General survey of radio frequency bands: 30MHz to 3 GHz. Technical report