1. Commission Implementing Regulation (EU) 2021/664 of 22 April 2021 on a regulatory framework for the U-space,2021
2. Acceptable Means of Compliance and Guidance Material to Regulation (EU) 2021/664 on a regulatory framework for the U-space,2022
3. Commission Implementing Regulation (EU) 2021/665 of 22 April 2021 amending Implementing Regulation (EU) 2017/373 as regards requirements for providers of air traffic management/air navigation services and other air traffic management network functions in the U-space airspace designated in controlled airspace,2021
4. SESAR Solution PJ34 WP3 Consolidated OSED V1 Part I,2023