@misc{indiciaec1b60283b490,
  title = {A robotic return to the moon},
  author = {Luttges, Marvin W. and Johnson, A. Steve and Faller, William E. and Hoehn, Alex},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910043051},
  note = {Source identifier: 19910043051}
}