@misc{indiciae5504fe229e56,
  title = {Inferences Concerning Auroras.},
  author = {E Thomson},
  year = {1917},
  doi = {10.1073/pnas.3.1.1},
  url = {https://pubmed.ncbi.nlm.nih.gov/16586674/},
  note = {Source identifier: 16586674}
}