@misc{indiciaeaaa19ec56a91,
  title = {Cooperative Upper Class E Airspace: Concept of Operations and Simulation Development for Operational Feasibility Assessment},
  author = {Hyo-Sang Yoo and Jinhua Li and Jeffrey Homola and Jaewoo Jung},
  year = {2021},
  url = {https://ntrs.nasa.gov/citations/20210017270},
  note = {Source identifier: 20210017270}
}