1. Cisco Annual Internet Report - Cisco Annual Internet Report (2018–2023) White Paper. https://www.cisco.com/c/en/us/solutions/collateral/executive-perspectives/annual-internet-report/white-paper-c11-741490.html. Accessed July 2020
2. Telecom Infra Project. (2020). https://telecominfraproject.com/. Accessed July 2020
3. 3GPP Technical specification 23.402: 3GPP System Architecture Evolution. www.3gpp.org
4. The 5G concept does not suit Russian vendors: 5G networks will be built by foreigners. (2020). https://www.tadviser.ru. Accessed July 2020
5. Virtual Evolved Packet Core (vEPC) Solution from Affirmed. (2019). https://www.affirmednetworks.com/products-solutions/virtual-evolved-packet-core/. Accessed July 2020