Swings, P. (July 1943). "Edlén's Identification of the Coronal Lines with Forbidden Lines of Fe X, XI, XIII, XIV, XV; Ni XII, XIII, XV, XVI; Ca XII, XIII, XV; a X, XIV". Astrophysical Journal. 98 (119): 116–124. Bibcode:1943ApJ....98..116S. doi:10.1086/144550.
Bensaude-Vincent, Bernadette (1982). "L'éther, élément chimique: un essai malheureux de Mendéleev en 1904". British Journal for the History of Science. 15: 183–188. doi:10.1017/S0007087400019166. JSTOR4025966.
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adsabs.harvard.edu
Swings, P. (July 1943). "Edlén's Identification of the Coronal Lines with Forbidden Lines of Fe X, XI, XIII, XIV, XV; Ni XII, XIII, XV, XVI; Ca XII, XIII, XV; a X, XIV". Astrophysical Journal. 98 (119): 116–124. Bibcode:1943ApJ....98..116S. doi:10.1086/144550.
jstor.org
Bensaude-Vincent, Bernadette (1982). "L'éther, élément chimique: un essai malheureux de Mendéleev en 1904". British Journal for the History of Science. 15: 183–188. doi:10.1017/S0007087400019166. JSTOR4025966.