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- [31] THE OLD OPEN CLUSTER NGC 2506 AND ITS SIMILARITY TO NGC 2420 ASTROPHYSICAL JOURNAL, 1981, 243 (03): : 841 - &
- [32] STRUCTURE COMPOSITION AND DIMENSIONS OF CLUSTER NGC 752 SOVIET ASTRONOMY AJ USSR, 1965, 8 (04): : 590 - &
- [33] Proper motions in the galactic cluster NGC 752 ASTROPHYSICAL JOURNAL, 1939, 89 (03): : 431 - 444
- [37] METAL ABUNDANCE OF OLD OPEN CLUSTER NGC 2243 ASTROPHYSICAL JOURNAL, 1978, 223 (02): : 483 - 486
- [38] A search for planets in the old open cluster NGC 6791 Bruntt, H. (bruntt@phys.au.dk), 1600, EDP Sciences (410):