1. Communication from the Commission to the EUROPEAN Parliament: A Policy Framework for Climate and Energy in the Period from 2020 to 2030,2014
2. Buildingshttps://ec.europa.eu/energy/en/topics/energy-efficiency/buildings
3. Law on Heat Energyhttps://narodne-novine.nn.hr/clanci/sluzbeni/2018_08_76_1552.html
4. Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings;Off. J. Eur. Union,2010
5. Cost Effectiveness of Individual Metering/Billing. Executive Summary Report 3.3, Core Theme 3.—Metering and Billing, Demand Response and Grid Issues, Working Group 2; Concerted Action Energy Efficiency Directivehttps://www.ca-eed.eu/content/download/4500/file/WG3.3%20Exec%20Summary%20FINAL.pdf