1. State Report “On the State of Energy Saving and Increasing Energy Efficiency in the Russian Federation”. Ministry of Economic Development of the Russian Federation. https://www.economy.gov.ru/material/file/c3901dba442f8e361d68bc019d7ee83f/Energyefficiency2020.pdf
2. Heating and cooling constitute around half of the EU energy consumption. Directorate-General for Energy. https://energy.ec.europa.eu/topics/energy-efficiency/heating-and-cooling_en
3. Energy consumption and use by households. Eurostat. https://ec.europa.eu/eurostat/web/products-eurostat-news/-/DDN-20190620-1
4. International Energy Agency (IEA). Energy balances of OECD countries 2014. https://www.oecd-ilibrary.org/content/publication/energy_bal_oecd-2014-en
5. European commission, EU-directive 2010/31/EC of the European Parliament and of the Council of 19 May 2010 on the Energy Performance of Buildings. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex%3A32010L0031