@misc{indiciae00bfd65d0574,
  title = {On the size of the flare associated with the solar proton event in 774 AD},
  author = {E. W. Cliver and H. Hayakawa and Jeffrey J. Love and D. F. Neidig},
  year = {2020},
  doi = {10.3847/1538-4357/abad93},
  url = {https://pubs.usgs.gov/publication/70222578},
  note = {Source identifier: 70222578}
}