@misc{indiciaed0ca44ce6041,
  title = {Upper and Middle Atmospheric Density Modeling Requirements for Spacecraft Design and Operations},
  author = {Davis, M. H. and Smith, R. E. and Johnson, D. L.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870011232},
  note = {Source identifier: 19870011232}
}