Perryman, M.A.C.; et al. (1998): «The Hyades: distance, structure, dynamics, and age», Astronomy & Astrophysics. 331, s. 81–120. arXiv:astro-ph/9707253. Bibcode:1998A&A...331...81P.
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Perryman, M.A.C.; et al. (1998): «The Hyades: distance, structure, dynamics, and age», Astronomy & Astrophysics. 331, s. 81–120. arXiv:astro-ph/9707253. Bibcode:1998A&A...331...81P.