@misc{indiciae9eef2a4a1872,
  title = {Approach Navigation Challenges for Mars Sample Return},
  author = {Portock, B. and Mase, R. and Taylor, A.},
  year = {2000},
  url = {https://ntrs.nasa.gov/citations/20060032349},
  note = {Source identifier: 20060032349}
}