1. Paris Agreement;UNFCCC;Conf Parties Its Twenty-First Sess,2015
2. United Nations Treaty Collection. Chapter XXVII Environment 7. d Paris Agreement 2018.
3. European Commission. Heating and Cooling, 2016.
4. Eurostat. Eurostat Statistics Explained: Consumption of energy.
5. European Commission. District level heating could help achieve EU 2020 energy efficiency goals, 2015.