1. European Commission, Smart Cities: Cities using technological solutions to improve the management and efficiency of the urban environment (2017)
2. United Nations, World Programme of Action Concerning Disabled Persons (1982)
3. United Nations, Standard Rules on the Equalization of Opportunities for Persons with Disabilities (1993)
4. United Nations, Convention on the Rights of Persons with Disabilities (2006)
5. United Nations, Transforming our world: the 2030 Agenda for sustainable development (2015)