1. World Health Organization (2023, April 03). Environmental Noise Guidelines for the European Region, Available online: https://www.euro.who.int/en/publications/abstracts/environmental-noise-guidelines-for-the-european-region-2018.
2. Klauke, S., Hussain, N., Stoufflet, B., Lorence, C., Preli, F., Stein, P., and Dalbies, E. (2023, February 20). The Sustainability of Aviation, a Statement of the Chief Technology Officers of Seven of the World’s Major Aviation Manufacturers. Available online: https://www.adsgroup.org.uk/reports/the-sustainability-of-aviation-a-shared-commitment/.
3. Kerhervé, F., Guitton, A., Jordan, P., Delville, J., Fortuné, V., Gervais, Y., and Tinney, C. (2008, January 5–7). Identifying the dynamics underlying the large-scale and fine-scale jetnoise similarity spectra. Proceedings of the 14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference), Vancouver, BC, Canada.
4. Hughes, C.E. (2023, February 22). NASA Collaborative Research on the Ultra High Bypass Engine Cycle and Potential Benefits for Noise, Performance, and Emissions, Available online: https://ntrs.nasa.gov/citations/20140004373.
5. European Commission (2023, April 05). European Green Deal, Available online: https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:52019DC0640&from=EN.