@misc{indiciae2d29f6523dfd,
  title = {Pluto's extended atmosphere - An escape model and initial observations},
  author = {Clarke, John T. and Stern, S. A. and Trafton, Laurence M.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920048512},
  note = {Source identifier: 19920048512}
}