Procopius (1916). Procopius. Vol. 2: History of the [Vandalic] Wars, Books III and IV. Translated by Dewing, Henry Bronson. London, England: William Heinemann. p. 329. ISBN978-0-674-99054-8.
Cassiodorus (1886). The Letters of Cassiodorus. Translated by Hodgkin, Thomas. London, England: Henry Frowde. pp. 518–520. See: "25. Senator, Praetorian Praefect, to his deputy Ambrosius, an Illustris."
Stothers, R. B.; Rampino, M. R. (1983). "Volcanic eruptions in the Mediterranean before AD 630 from written and archaeological sources". Journal of Geophysical Research. 88 (B8): 6357–6471. Bibcode:1983JGR....88.6357S. doi:10.1029/JB088iB08p06357. ISSN0148-0227.
Abbott, D. H.; Biscaye, P.; Cole-Dai, J.; Breger, D. (December 2008). "Magnetite and Silicate Spherules from the GISP2 Core at the 536 A.D. Horizon". AGU Fall Meeting Abstracts. American Geophysical Union, Fall Meeting 2008. Vol. 41. pp. 41B–1454. Bibcode:2008AGUFMPP41B1454A. Abstract #PP41B-1454.
Stothers, R. B.; Rampino, M. R. (1983). "Volcanic eruptions in the Mediterranean before AD 630 from written and archaeological sources". Journal of Geophysical Research. 88 (B8): 6357–6471. Bibcode:1983JGR....88.6357S. doi:10.1029/JB088iB08p06357. ISSN0148-0227.
Dull, R.; Southon, J. R.; Kutterolf, S.; Freundt, A.; Wahl, D.; Sheets, P. (13–17 December 2010). "Did the TBJ Ilopango eruption cause the AD 536 event?". AGU Fall Meeting Abstracts. 13: V13C–2370. Bibcode:2010AGUFM.V13C2370D.
Michel le Syrien (1901). Chronique de Michel le Syrien, Patriarche Jacobite d'Antoche [Chronicle of Michael the Syrian, Jacobite Patriarch of Syria] (in French). Vol. 2. Translated by Chabot, J. -B. Paris, France: Leroux. pp. 220–221. "Or, un peu auparavant, en l'an 848, il y eut un signe dans le soleil..., et le vin avait le goût de celui qui provient de raisins acides." (However, a little earlier, in the year 848 [according to the Greek calendar; AD 536/537 according to the Christian calendar], there was a sign in the sun. One had never seen it [before] and nowhere is it written that such [an event] had happened [previously] in the world. If it were not [true] that we found it recorded in most proven and credible writings, and confirmed by men worthy of belief, we would not have written it [here]; for it's difficult to conceive. So it is said that the sun was darkened and that its eclipse lasted a year and a half, that is, eighteen months. Every day it shone for about four hours and yet this light was only a feeble shadow. Everyone declared that it would not return to the state of its original light. Fruits did not ripen, and wine had the taste of what comes from sour grapes.)
Stothers, R. B.; Rampino, M. R. (1983). "Volcanic eruptions in the Mediterranean before AD 630 from written and archaeological sources". Journal of Geophysical Research. 88 (B8): 6357–6471. Bibcode:1983JGR....88.6357S. doi:10.1029/JB088iB08p06357. ISSN0148-0227.