1. A.S.G. Andrae, T. Edler, Challenges 6, 117 (2015)
2. N. Jones, The information factories. Nature 561, 163 (2018)
3. Cisco Visual Networking Index: Forecast and Trends, 2017–2022 (2018). Retrieved from
www.cisco.com/c/m/en_us/solutions/service-provider/vni-forecast-highlights.html
. 20 March 2019
4. A. Andrae, Total consumer power consumption forecast. Retrieved from
www.researchgate.net/publication/320225452_Total_Consumer_Power_Consumption_Forecast
. 24 May 2019
5. U.S. Energy Information Administration. Retrieved from
https://www.eia.gov/outlooks/ieo/pdf/transportation.pdf
. 20 March 2019