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Keenan, Philip C.; McNeil, Raymond C. (1989). The Perkins Catalog of Revised MK Types for the Cooler Stars. The Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
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Schiavon, Ricardo P. (July 2007), Population Synthesis in the Blue. IV. Accurate Model Predictions for Lick Indices and UBV Colors in Single Stellar Populations, The Astrophysical Journal Supplement Series, 171 (1): 146–205, arXiv:astro-ph/0611464, Bibcode:2007ApJS..171..146S, doi:10.1086/511753, S2CID13946698.
psi 1 Aur, database entry, Combined General Catalog of Variable Stars (GCVS5.1, 2017 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID II/250Архивная копия от 1 июля 2015 на Wayback Machine Accessed online 2020-11-05.
cdsarc.u-strasbg.fr
psi 1 Aur, database entry, Combined General Catalog of Variable Stars (GCVS5.1, 2017 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID II/250Архивная копия от 1 июля 2015 на Wayback Machine Accessed online 2020-11-05.
web.archive.org
psi 1 Aur, database entry, Combined General Catalog of Variable Stars (GCVS5.1, 2017 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID II/250Архивная копия от 1 июля 2015 на Wayback Machine Accessed online 2020-11-05.