@misc{indiciaee99716cc2b9d,
  title = {Impact and explosion crater ejecta, fragment size, and velocity},
  author = {Okeefe, J. D. and Ahrens, T. J.},
  year = {1985},
  url = {https://ntrs.nasa.gov/citations/19850056142},
  note = {Source identifier: 19850056142}
}