@misc{indiciae41d5508d1027,
  title = {Fission-track ages of sphene and apatite of granitic rocks of the Salinian block, Coast Ranges, California},
  author = {C. W. Naeser and D. C. Ross},
  year = {1976},
  url = {https://pubs.usgs.gov/publication/70232782},
  note = {Source identifier: 70232782}
}