6 citations as recorded by crossref.

1. A great space weather event in February 1730 H. Hayakawa et al. https://doi.org/10.1051/0004-6361/201832735
2. Revisiting Kunitomo’s Sunspot Drawings During 1835 – 1836 in Japan M. Fujiyama et al. https://doi.org/10.1007/s11207-019-1429-3
3. The Greenwich Photo-heliographic Results (1874 – 1976): Summary of the Observations, Applications, Datasets, Definitions and Errors D. Willis et al. https://doi.org/10.1007/s11207-013-0311-y
4. The 2024 May event in the context of auroral activity over the past 375 yr M. Lockwood et al. https://doi.org/10.1093/mnras/staf827
5. Sporadic auroras near the geomagnetic equator: in the Philippines, on 27 October 1856 H. Hayakawa et al. https://doi.org/10.5194/angeo-36-1153-2018
6. A possible case of sporadic aurora observed at Rio de Janeiro D. Oliveira et al. https://doi.org/10.1186/s40623-020-01208-z