@misc{indiciae2fc189bf3e06,
  title = {Urban Air Mobility Airspace Dynamic Density},
  author = {Liljana Spirkovska and Chetan S. Kulkarni and Jason Watkins and Lynne Martin},
  url = {https://ntrs.nasa.gov/citations/20220006541},
  note = {Source identifier: 20220006541}
}