@misc{indiciae98ef7ba19165,
  title = {Tektite origin by hypervelocity asteroidal or cometary impact: The quest for the source craters},
  author = {Koeberl, Christian},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19930000966},
  note = {Source identifier: 19930000966}
}