Bond, Howard E.; et al. (novembro de 2015). «Hubble Space Telescope Astrometry of the Procyon System». The Astrophysical Journal. 813 (2): artigo 106, 19. Bibcode:2015ApJ...813..106B. doi:10.1088/0004-637X/813/2/106 !CS1 manut: Uso explícito de et al. (link)
Kervella, P.; et al. (janeiro de 2004). «The diameter and evolutionary state of Procyon A. Multi-technique modeling using asteroseismic and interferometric constraints». Astronomy and Astrophysics. 413: 251-256. Bibcode:2004A&A...413..251K. doi:10.1051/0004-6361:20031527 !CS1 manut: Uso explícito de et al. (link)
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Bond, Howard E.; et al. (novembro de 2015). «Hubble Space Telescope Astrometry of the Procyon System». The Astrophysical Journal. 813 (2): artigo 106, 19. Bibcode:2015ApJ...813..106B. doi:10.1088/0004-637X/813/2/106 !CS1 manut: Uso explícito de et al. (link)
Kervella, P.; et al. (janeiro de 2004). «The diameter and evolutionary state of Procyon A. Multi-technique modeling using asteroseismic and interferometric constraints». Astronomy and Astrophysics. 413: 251-256. Bibcode:2004A&A...413..251K. doi:10.1051/0004-6361:20031527 !CS1 manut: Uso explícito de et al. (link)