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2. Application of Noise Certification Regulations within Conceptual Aircraft Design
3. European Union Aviation Safety Agency (EASA), "Environmental protection requirements for supersonic transport aeroplanes," Tech. Rep. A-NPA 2022-05, Advance Notice of Proposed Amendment, https://www.easa.europa.eu/en/document-library/noticesof-proposed-amendment/npa-2022-05, 2022.