@misc{indiciaea7c982bd4ece,
  title = {Regolith-structure modeling of lunar facilities},
  author = {Perkins, Steven W. and Sture, Stein and Ko, Hon-Yim},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910042995},
  note = {Source identifier: 19910042995}
}