1. European Commission (2020). Proposed Mission: 100 Climate-Neutral Cities by 2030-by and for the Citizens, European Commission.
2. Amores, A., Álvarez, L., Chico, J., Ramajo, I., and Urgel, J.M. (2020, October 02). The Future of Sustainable Cities: Urban Energy Transition to 2030. Explore the Future of Sustainable Cities and Their Role in the Energy Transition in Spain. Available online: https://www2.deloitte.com/global/en/pages/energy-and-resources/articles/future-of-sustainable-cities-urban-energy-transition-to-2030.html.
3. OECD (2020). Managing Environmental and Energy Transitions for Regions and Cities, OECD.
4. The United Nations (2016). The New Urban Agenda, The United Nations. Available online: https://habitat3.org/the-new-urban-agenda/.
5. Future city visions. The energy transition towards carbon-neutrality: Lessons learned from the case of Roeselare, Belgium;Pulselli;Renew. Sustain. Energy Rev.,2021