@misc{indiciae6c9b9e60a8de,
  title = {The slotted cone splitter},
  author = {Francis James Flanagan and R.C. Kellagher and William L. Smith},
  year = {1958},
  doi = {10.3133/tei720},
  url = {https://pubs.usgs.gov/publication/tei720},
  note = {Source identifier: tei720}
}