@misc{indiciae378e4ef65ccb,
  title = {Observing Halley from Venus},
  author = {Jackson, Robert W. and Lozier, David W. and Phillips, James R. and Smith, Martha A.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870035399},
  note = {Source identifier: 19870035399}
}