Steven D. Jaffe (2016) (英語). Airspace Closure and Civil Aviation: A Strategic Resource for Airline Managers. Taylor & Francis. pp. 149-150. doi:10.4324/9781315566511. ISBN9781315566511
Darwin, Charles R., (1839) Narrative of the surveying voyages of His Majesty's Ships Adventure and Beagle between the years 1826 and 1836, describing their examination of the southern shores of South America, and the Beagle's circumnavigation of the globe. Journal and remarks. 1832-1836., London: Henry Colburn, pp. 619. 44頁でダーウィンは、"On a second night we witnessed a splendid scene of natural fireworks; the mast-head and yard-arm ends shone with St. Elmo's light; and the form of the vane could almost be traced, as if it had been rubbed with phosphorus." と述べている（強調：引用者）。
