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- [42] CONSTRAINTS ON HELIUM ENHANCEMENT IN THE GLOBULAR CLUSTER M4 (NGC 6121): THE HORIZONTAL BRANCH TEST ASTROPHYSICAL JOURNAL, 2014, 782 (02):
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- [47] THE RR LYRAE VARIABLE-STARS IN THE GLOBULAR-CLUSTER M15 ASTRONOMICAL JOURNAL, 1995, 110 (02): : 704 - 728
- [48] NTT CCD photometry of the globular cluster M 79 = NGC 1904 in UBV ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1997, 125 (01): : 1 - 9
- [50] SPECTROSCOPY OF AN APPARENTLY NONVARIABLE STAR WITHIN THE RR LYRAE GAP OF THE GLOBULAR-CLUSTER NGC 5897 ASTRONOMICAL JOURNAL, 1985, 90 (07): : 1242 - 1246