@misc{indiciae77ddb79ed9e4,
  title = {A Mars Airplane . . . Oh really},
  author = {Clarke, V. C., Jr. and Kerem, A. and Lewis, R.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19790035503},
  note = {Source identifier: 19790035503}
}