1. Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the Energy Performance of Buildings, http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:153:0013:0035:EN:PDF, Brussels.
2. European Standard EN 15316-2:2014, Heating systems and water based cooling systems in buildings—method for calculation of system energy requirements and system efficiencies—Part 2: Space emission systems. (heating and cooling), CEN, Brussels, 2014.
3. European Standard EN 15316-1:2007, Heating systems in buildings. Method for calculation of system energy requirements and system efficiencies. Part 1: General, CEN, Brussels, 2007.
4. Calculation of the yearly energy performance of heating systems based on the European Building Energy Directive and related CEN standards;Olesen;Energy Build.,2011
5. Leistungsminderung bei Heizkörperverkleidungen;Sauter,1985