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1991TrSht..62..234E - Trudy Gosud. Astron. Inst. Shternberga, 62, 234-237 (1991)
Precise positions of reference stars in open clusters NGC 457 and NGC 581.
EVSTIGNEEVA N.M., SHOKIN Y.A. and YUFEREV A.O.
Journal keyword(s):
Nomenclature: Cl* NGC 457 ESY NN (Nos 1-76). Cl* NGC 581 ESY NN (Nos 1-69).
Simbad objects: 148