1. Harbor aluminium “Green Aluminum: The Sustainable Metal” accessed 18/11/23 https://www.harboraluminum.com/en/green-aluminum#:~:text=Environmentally%20friendly%20aluminum%20is%20considered,can%20be%20considered%20Green%20Aluminum.
2. https://primary.world-aluminium.org/aluminium-facts/energy-water/ accessed 18/11/23
3. https://international-aluminium.org/work_areas/recycling/#:~:text=Aluminium%20is%20one%20of%20the,recycled%20materials%20on%20the%20planet accessed 28/11/2023
4. Yue Wu 2022 J. Phys.: Conf. Ser. 2228 012024 Application of aluminum alloy in aircraft https://doi.org/10.1088/1742-6596/2228/1/012024
5. The New York Times July 29, 2013 The Jump to a Composite Plane