@misc{indiciaeaaa1beacbbbe,
  title = {Heart attacks and geomagnetic activity.},
  author = {E G Knox and E Armstrong and R Lancashire and M Wall and R Haynes},
  year = {1979},
  doi = {10.1038/281564a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/492317/},
  note = {Source identifier: 492317}
}