1. Data Explorer: ‘Historical GHG emissions by country and sector’
2. Energy Roadmap 2050;Commission,2012
3. Heat Roadmap Europe: combining district heating with heat savings to decarbonise the EU energy system;Connolly;Energy Policy,2014
4. World Urbanization Prospects: The 2018 Revision, Online Edition’, https://population.un.org/wup/Download/ (accessed February, 2022).
5. ‘Time series for the development of renewable energy sourcesin Germany: based on statistical data from the Working Group on Renewable Energy-Statistics (AGEE-Stat) (Status: February 2022)’, https://www.erneuerbare-energien.de/EE/Redaktion/DE/Downloads/zeitreihen-zur-entwicklung-der-erneuerbaren-energien-in-deutschland-1990-2021-en.pdf;jsessionid=22AB6FDB9269DFBA6033CB848BDC9C0D?__blob=publicationFile&v=17 (accessed June, 2022).