William G., Jr. Bagnuolo, Reed L. Riddle, Douglas R. Gies, Donald J. Barry. ι Orionis-Evidence for a Capture Origin Binary. „The Astrophysical Journal”. 554 (1), s. 362–367, 2001. DOI: 10.1086/321367. Bibcode: 2001ApJ...554..362B. (ang.).
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William G., Jr. Bagnuolo, Reed L. Riddle, Douglas R. Gies, Donald J. Barry. ι Orionis-Evidence for a Capture Origin Binary. „The Astrophysical Journal”. 554 (1), s. 362–367, 2001. DOI: 10.1086/321367. Bibcode: 2001ApJ...554..362B. (ang.).