@misc{indiciae8a0c0d558350,
  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/20210024185},
  note = {Source identifier: 20210024185}
}