@misc{indiciae84086c334ec8,
  title = {Approach for targeting landers and penetrators using orbital optical navigation},
  author = {Wang, Tseng-Chan and Duxbury, Thomas C. and Synnott, Stephen P. and Edwards, Kathleen},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910067399},
  note = {Source identifier: 19910067399}
}