@misc{indiciae29713b114fee,
  title = {Steens Mountain geomagnetic polarity transition is a single phenomenon},
  author = {C. S. Grommé and E. A. Mankinen and M. Prevot and R. S. Coe},
  year = {1985},
  doi = {10.1038/318487b0},
  url = {https://pubs.usgs.gov/publication/70013075},
  note = {Source identifier: 70013075}
}