1. United Nations (2024, January 02). Goal 11: Make Cities Inclusive, Safe, Resilient and Sustainable. Available online: https://www.un.org/sustainabledevelopment/cities/.
2. ITU-T (2024, January 02). An Overview of Smart Sustainable Cities and the Role of Information and Communication Technologies. Available online: https://www.itu.int/en/itu-t/focusgroups/ssc/documents/approved_deliverables/tr-overview-ssc.docx.
3. ISO/IEC JTC 1 Information Technology (2024, January 02). Smart Cities. Available online: https://www.iso.org/files/live/sites/isoorg/files/developing_standards/docs/en/smart_cities_report-jtc1.pdf.
4. Smart cities as hubs: Connect, collect and control city flows;Anthopoulos;Cities,2022
5. ITU-T (2024, January 02). General specifications and KPIs. Available online: https://www.itu.int/dms_pub/itu-t/oth/4B/04/T4B0400000B0009PDFE.pdf.