Energy Efficiency in Sustainable Buildings: A Systematic Review with Taxonomy, Challenges, Motivations, Methodological Aspects, Recommendations, and Pathways for Future Research oleh Fatma S. Hafez, Bahaaeddin Sa'di, M. Safa-Gamal, Y.H. Taufiq-Yap, Moath Alrifaey, Mehdi Seyedmahmoudian, Alex Stojcevski, Ben Horan, Saad Mekhilef