TY  - RPRT
TI  - On the size of the flare associated with the solar proton event in 774 AD
AU  - E. W. Cliver
AU  - H. Hayakawa
AU  - Jeffrey J. Love
AU  - D. F. Neidig
PY  - 2020
DO  - 10.3847/1538-4357/abad93
UR  - https://pubs.usgs.gov/publication/70222578
ID  - 70222578
ER  -