@misc{indiciae481b99e92489,
  title = {Geophysical theory.},
  author = {H Jeffreys},
  year = {1970},
  doi = {10.1038/227869a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/16058190/},
  note = {Source identifier: 16058190}
}