@misc{indiciae1e970cdd582d,
  title = {Submicroscopic spherules and color of tektites},
  author = {A. N. Thorpe and F. E. Senftle},
  year = {1964},
  doi = {10.1016/0016-7037(64)90045-6},
  url = {https://pubs.usgs.gov/publication/70010489},
  note = {Source identifier: 70010489}
}