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- [24] Wide-field CCD photometry of the globular cluster M92 ASTRONOMICAL JOURNAL, 2003, 126 (02): : 815 - 825
- [28] Mg isotope ratios in giant stars of the globular clusters M13 and M71 ASTROPHYSICAL JOURNAL, 2006, 638 (02): : 1018 - 1027
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- [30] Stromgren photometry of globular clusters: The distance and age of M13, evidence for two populations of horizontal-branch stars ASTROPHYSICAL JOURNAL, 1998, 500 (02): : L179 - L182