1. UN: World Urbanization Prospects: The 2014 Revision. United Nations, Department of Economic and Social Affairs, Population Division, ST/ESA/SER.A/366 (2015)
2. IBM: Making Sense of a Sensored World. IBM Smarter Planet. https://www.ibm.com/
3. Cisco: Smart+connected Communities. Changing a City, a Country, the World. Cisco White paper. https://www.cisco.com/
4. Siemens: Siemens City Cockpit White paper. City Cockpit in Singapore: Collective Intelligence - Real Time Government. Siemens. https://www.siemens.com/
5. Microsoft: Microsoft Citynext White paper. Accelerating the Digital Transformation of Smart Cities and Smart Communities. Microsoft. https://enterprise.microsoft.com/