@misc{indiciae78e357f36b1b,
  title = {Fused rock from Köfels, Tyrol},
  author = {Daniel J. Milton},
  year = {1964},
  doi = {10.1007/bf01127777},
  url = {https://pubs.usgs.gov/publication/70010550},
  note = {Source identifier: 70010550}
}