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SEMENOVA, Ekaterina; BERGEMANN, Maria; DEAL, Morgan, et al. The Gaia-ESO survey: 3D NLTE abundances in the open cluster NGC 2420 suggest atomic diffusion and turbulent mixing are at the origin of chemical abundance variations. S. 15. Astronomy and Astrophysics [online]. Listopad 2020 [cit. 2021-01-13]. Roč. 643, s. 15. Dostupné online. arXiv2007.09153. DOI10.1051/0004-6361/202038833. Bibcode2020A&A...643A.164S. (anglicky)
COLLINDER, Per. On Structural Properties of Open Galactic Clusters and their Spatial Distribution. Catalog of Open Galactic Clusters. S. B1-B46. Annals of the Observatory of Lund [online]. 1931 [cit. 2021-01-13]. Čís. 2, s. B1-B46. Dostupné online. Bibcode1931AnLun...2....1C. (anglicky)
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SEMENOVA, Ekaterina; BERGEMANN, Maria; DEAL, Morgan, et al. The Gaia-ESO survey: 3D NLTE abundances in the open cluster NGC 2420 suggest atomic diffusion and turbulent mixing are at the origin of chemical abundance variations. S. 15. Astronomy and Astrophysics [online]. Listopad 2020 [cit. 2021-01-13]. Roč. 643, s. 15. Dostupné online. arXiv2007.09153. DOI10.1051/0004-6361/202038833. Bibcode2020A&A...643A.164S. (anglicky)
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