1. Gubbi, J., Buyya, R., Marusic, S., Palaniswami, S.: Internet of Things (IoT): A vision, architectural elements, and future directions. Future Gener. Comput. Syst. 29(7), 1645–1660 (2003)
2. Cisco Systems Inc.: Cisco Visual Networking Index: Forecast and Trends, pp. 2017–2022 (2019). https://www.cisco.com/c/en/us/solutions/collateral/service-provider/visual-networking-index-vni/white-paper-c11-741490.pdf Accessed: 19 June 2020
3. Manyika, J., Michael Chui, M.: Open interactive popup McKinsey Global Institute. The Internet of Things: Mapping the value beyond the Hype (2015). https://www.mckinsey.com/mgi/overview/in-the-news/by-2025-internet-of-things-applications-could-have-11-trillion-impact Accessed: 19 June 2020
4. Sisinni, E., Saifullah, A., Han, S., Jennehag, U., Gidlund, M.: Industrial internet of things: challenges, opportunities, and directions. IEEE Trans. Ind. Inform. 14(11), 4724–4734 (2018)
5. Lu, Y.: Industry 4.0: A survey on technologies, applications and open research issues. J. Ind. Inf. Int. 6, 1–10 (2017)