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- [32] Variable stars in the field of the old open cluster NGC 2243 ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1996, 118 (02): : 303 - 310
- [33] BV CCD PHOTOMETRY OF THE OLD OPEN CLUSTER NGC 2243 ASTRONOMICAL JOURNAL, 1991, 101 (06): : 2102 - 2125
- [37] NGC 1605a and NGC 1605b: An Old Binary Open Cluster in the Galaxy ASTROPHYSICAL JOURNAL, 2021, 923 (01):
- [39] The extended halo and tidal tails of the old open cluster NGC 2112 Publications of the Astronomical Society of Japan, 76 (06): : 1253 - 1259
- [40] A CCD PHOTOMETRIC ANALYSIS OF THE OLD OPEN CLUSTER NGC-2420 ASTRONOMICAL JOURNAL, 1990, 99 (05): : 1504 - 1535