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Catelan, M.; Cortés, C. (april 2008), „Evidence for an Overluminosity of the Variable Star RR Lyrae, and a Revised Distance to the LMC”, The Astrophysical Journal, 676 (2): L135—L138, Bibcode:2008ApJ...676L.135C, arXiv:0802.2063, doi:10.1086/587515
Benedict, G. Fritz; et al. (januar 2002), „Astrometry with the Hubble Space Telescope: A Parallax of the Fundamental Distance Calibrator RR Lyrae”, The Astronomical Journal, 123 (1): 473—484, Bibcode:2002AJ....123..473B, arXiv:astro-ph/0110271, doi:10.1086/338087
Smith, Horace A.; et al. (januar 2003), „The Blazhko Effect of RR Lyrae in 1996”, The Publications of the Astronomical Society of the Pacific, 115 (803): 43—48, Bibcode:2003PASP..115...43S, doi:10.1086/345458