Mason, Brian D.; Hartkopf, William I.; Wycoff, Gary L.; Holdenried, Ellis R. (2006). “Speckle Interferometry at the US Naval Observatory. XII.”. The Astronomical Journal132 (5): 2219-2230. doi:10.1086/508231. ISSN0004-6256.
Hutchings, J. B.; Griffin, R. F.; Ménard, F. (2000). “Direct Observation of the Fourth Star in the ζ Cancri System”. Publications of the Astronomical Society of the Pacific112 (772): 833-836. doi:10.1086/316587. ISSN0004-6280.
Mason, Brian D.; Hartkopf, William I.; Wycoff, Gary L.; Holdenried, Ellis R. (2006). “Speckle Interferometry at the US Naval Observatory. XII.”. The Astronomical Journal132 (5): 2219-2230. doi:10.1086/508231. ISSN0004-6256.
Hutchings, J. B.; Griffin, R. F.; Ménard, F. (2000). “Direct Observation of the Fourth Star in the ζ Cancri System”. Publications of the Astronomical Society of the Pacific112 (772): 833-836. doi:10.1086/316587. ISSN0004-6280.