@misc{indiciae854327b49270,
  title = {Pacific geomagnetic secular variation},
  author = {Richard R. Doell and A. Cox},
  year = {1971},
  doi = {10.1126/science.171.3968.248},
  url = {https://pubs.usgs.gov/publication/70010330},
  note = {Source identifier: 70010330}
}