1. European Commission (EC), “Energy Roadmap 2050”, 2011. DOI: 10.2833/10759.
2. European Commission, “Clean energy for all Europeans package,” 2015. https://ec.europa.eu/energy/topics/energy-strategy/clean-energy-all-europeans_en (accessed Feb. 20, 2020).
3. Energy retrofit of residential building envelopes in Israel: A cost-benefit analysis;Friedman;Energy,2014
4. “Business Energy Advisor | Colleges and Universities”, Business Energy Advisor, 2020. https://esource.bizenergyadvisor.com/article/colleges-and-universities (accessed Feb. 22, 2021).
5. EU Buildings Database, “EU Buildings Database - Energy”, European Commission, 2021. https://ec.europa.eu/energy/eu-buildings-database_en (accessed Feb. 21, 2021).