1. M. Aboulnaga, et al., Sustainability of Higher EducationalBuildings: Retrofiting approach to improve energy performanceand mitigate CO2emissions in hot climates, Renew. EnergyEnviron. Sustain. (2016.)
2. Morsy, M., Fahmy, M., Abd Elshakour, H., & Belal, A. M. (2018). Effect of thermal insulation on building thermal comfort and energy consumption in Egypt. Journal of Advanced Research in Applied Mechanics, 43, 8-19.
3. Mujeebu, M. A., Ashraf, N., & Alsuwayigh, A. H. (2016). Effect of nano vacuum insulation panel and nanogel glazing on the energy performance of office building. Applied energy, 173, 141.
4. Alam, M., Singh, H., Suresh, S., & Redpath, D. A. G. (2017). Energy and economic analysis of Vacuum Insulation Panels (VIPs) used in non-domestic buildings. Applied Energy, 188, 1-8.
5. Griffith, B., Turler, D., & Arasteh, D. (1993). Optimizing the effective conductivity and cost of gas-filled panel thermal insulations.
6. Stahl, T., Brunner, S., Zimmermann, M., & Wakili, K. G. (2012). Thermo-hygric properties of a newly developed aerogel-based insulation rendering for both exterior and interior applications. Energy and Buildings, 44, 114-117.
7. Ansuini, R., Larghetti, R., Giretti, A., & Lemma, M. (2011). Radiant floors integrated with PCM for indoor temperature control. Energy and Buildings, 43(11), 3019-3026.
8. Ascione, F., Bianco, N., De Masi, R. F., de’Rossi, F., & Vanoli, G. P. (2014). Energy refurbishment of existing buildings through the use of phase change materials: Energy savings and indoor comfort in the cooling season. Applied Energy, 113, 990-1007.
9. Perini, K., Ottelé, M., Fraaij, A. L. A., Haas, E. M., & Raiteri, R. (2011). Vertical greening systems and the effect on air flow and temperature on the building envelope. Building and Environment, 46(11), 2287-2294.
10. Bahadori-Jahromi, A., Rotimi, A., Mylona, A., Godfrey, P., & Cook, D. (2017). Impact of window films on the overall energy consumption of existing UK hotel buildings. Sustainability, 9(5), 731.
11. Yin, R., Xu, P., & Shen, P. (2012). Case study: Energy savings from solar window film in two commercial buildings in Shanghai. Energy and Buildings, 45, 132-140.
12. Li, C., Tan, J., Chow, T. T., & Qiu, Z. (2015). Experimental and theoretical study on theeffect of window films on building energy consumption. Energy and buildings, 102,129-138.
13. Gao, T., Ihara, T., Grynning, S., Jelle, B. P., & Lien, A. G. (2016). Perspective of aerogel glazings in energy efficient buildings. Building and Environment, 95, 405-413.
14. Delgarm, N.; Sajadi, B.; Kowsary, F.; Delgarm, S. Multi-objective optimization of the building energy performance: A simulation-based approach by means of particle swarm optimization (PSO). Appl. Energy 2016, 170, 293–303.
15. Radwan, A. F., Hanafy, A. A., Elhelw, M., & El-Sayed, A. E. H. A. (2016). Retrofitting of existing buildings to achieve better energy-efficiency in commercial building case study: Hospital in Egypt. Alexandria engineering journal, 55(4), 3061-3071.
16. Sun, X., Gou, Z., Lau, S.S.Y., 2018. Cost-Effectiveness of Active and Passive Design Strategies for Existing Building Retrofits in Tropical Climate: Case Study of a ZeroEnergy Building. Journal of Cleaner Production, Volume 183, pp. 35
17. Yang, J., Lim, S., 2007. An Integrated Approach to the “Relife” of Office Buildings. In: CIB World Building Congress 2007 ‘Construction for Development’, 14-17 May 2007, Cape Town, South Africa
18. Hong, Y., Deng, W., Ezeh, C. I., Peng, Z., 2019. Attaining Sustainability in Built Environment: Review of Green Retrofit Measures for Existing Buildings. In: IOP Conference Series: Earth and Environmental Science, Volume 227(4), pp. 042051
19. Ferrari, S., Beccali, M., 2017. Energy-Environmental and Cost Assessment of a Set of Strategies for Retrofitting a Public Building Toward Nearly Zero-Energy Building Target. Sustainable Cities and Society, Volume 32, pp. 226–234
20. Hong, Y., Deng, W., Ezeh, C. I., Peng, Z., 2019. Attaining Sustainability in Built Environment: Review of Green Retrofit Measures for Existing Buildings. In: IOP Conference Series: Earth and Environmental Science, Volume 227(4), pp. 042051
21. Santamouris, M., Pavlou, C., Doukas, P., Mihalakakou, G., Synnefa, A., Hatzibiros, A., & Patargias, P. (2007). Investigating and analysing the energy and environmental performance of an experimental green roof system installed in a nursery school building in Athens, Greece. Energy, 32(9), 1781-1788.
22. P. Raftery, M. Keane, J. O’Donnell, Calibrating whole building energy models: an evidence-based methodology, Energy and Buildings 43 (2011) 2356–2364
23. Ma, Z., Cooper, P., Daly, D., & Ledo, L. (2012). Existing building retrofits: Methodology and state-of-the-art. Energy and buildings, 55, 889-902