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Pasinetti Fracassini, L. E.; et al. (2001-02), “Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics”, Astronomy & Astrophysics367: 521-524, Bibcode: 2001A&A...367..521P, doi:10.1051/0004-6361:20000451
Knobel, E. B. (1895-06), “On a Catalogue of Stars in the Calendarium of Mohammad Al Achisasi Al Mouakket”, Monthly Notices of the Royal Astronomical Society55: 429-438, Bibcode: 1895MNRAS..55..429K, doi:10.1093/mnras/55.8.429