@misc{indiciaeb52a11483101,
  title = {Lunar Lava Tube Sensing},
  author = {York, Cheryl Lynn and Walden, Bryce and Billings, Thomas L. and Reeder, P. Douglas},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19930008081},
  note = {Source identifier: 19930008081}
}