@misc{indiciaee10cda9080c2,
  title = {Fission-track dating of pumice from the KBS Tuff, East Rudolf, Kenya},
  author = {A.J. Hurford and A.J.W. Gleadow and C. W. Naeser},
  year = {1976},
  doi = {10.1038/263738a0},
  url = {https://pubs.usgs.gov/publication/70001091},
  note = {Source identifier: 70001091}
}