D. N. Baker u. a.: A major solar eruptive event in July 2012: Defining extreme space weather scenarios. Space Weather, Bind 11, s. 585–591, doi:10.1002/swe.20097, 2013
hathitrust.org
babel.hathitrust.org
The 9 articles by E. Loomis published from November 1859 to July 1862 in the American Journal of Science regarding "The great auroral exhibition", 28 – 4 August September 1859:
Thompson, Richard (24. september 2015). «A solar flare effect». Space Weather Services. Australian Government Bureau of Meteorology. Arkivert fra originalen 24. september 2015. Besøkt 2. september 2015.
lloyds.com
Solar storm risk to the north American electric grid(PDF). Lloyd's of London and Atmospheric and Environmental Research, Inc. input from Homeier, Nicole; Horne, Richard; Maran, Michael; Wade, David. Lloyd's of London. 2013. Arkivert fra originalen(PDF) 5. desember 2016. Besøkt 31. juli 2019.
Thompson, Richard (24. september 2015). «A solar flare effect». Space Weather Services. Australian Government Bureau of Meteorology. Arkivert fra originalen 24. september 2015. Besøkt 2. september 2015.
Solar storm risk to the north American electric grid(PDF). Lloyd's of London and Atmospheric and Environmental Research, Inc. input from Homeier, Nicole; Horne, Richard; Maran, Michael; Wade, David. Lloyd's of London. 2013. Arkivert fra originalen(PDF) 5. desember 2016. Besøkt 31. juli 2019.