@misc{indiciaec750f08f8151,
  title = {Geomagnetic dynamos in a stable core.},
  author = {E Bullard and D Gubbins},
  year = {1971},
  doi = {10.1038/232548b0},
  url = {https://pubmed.ncbi.nlm.nih.gov/16063096/},
  note = {Source identifier: 16063096}
}