Sharma, Shree Krishna; Jayakody, Dushantha Nalin; Chatzinotas, Symeon; Anpalagan, Alagan: 'Introduction to communication technologies for networked smart cities' (Telecommunications, 2021), 'Communication Technologies for Networked Smart Cities', Chap. 1, pp. 1-10, DOI: 10.1049/PBTE090E_ch1 IET Digital Library, https://digital-library.theiet.org/;jsessionid=3lu2r0f4kslu2.x-iet-live-01content/books/10.1049/pbte090e_ch1