@misc{indiciaece31320d51ae,
  title = {An omnidirectional penetrometer for lunar surface characterization.},
  author = {Kraemer, R. S. and Mcclellan, R. G.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19670032394},
  note = {Source identifier: 19670032394}
}