1. European Commission, “Energy efficiency in buildings,” European Commission, https://ec.europa.eu/energy/en/topics/energy-efficiency/energy-performance-of-buildings/overview, 2011, [Accessed: 03-June-2019].
2. Tendencias y políticas de eficiencia energética en España,2018
3. European Commission, “Energy performance of building directive (EPBD). 2010/31/EU,” European Commission, https://ec.europa.eu/energy/en/topics/energy-efficiency/energy-performance-of-buildings/overview, 2010, [Accessed: 04-June-2019].
4. European Commission, “Energy Efficiency Directive. 2012/27/EU,” European Commission, https://ec.europa.eu/energy/en/topics/energy-efficiency/targets-directive-and-rules/energy-efficiency-directive, 2012, [Accessed: 04-June-2019].
5. What is a Nearly zero energy building? overview, implementation and comparison of definitions;D'Agostino;J. Build. Eng.,2019