@misc{indiciae1cff903d7a73,
  title = {Cooperative Separation in Upper Class E Airspace},
  author = {Hyo-sang Yoo and Jinhua Li and Ray Torres and Richard H. Jacoby and Jeffrey Homola and Christopher O'Hara},
  year = {2022},
  url = {https://ntrs.nasa.gov/citations/20220015612},
  note = {Source identifier: 20220015612}
}