Johnson, Christian I.; Caldwell, Nelson; Rich, R. Michael; Pilachowski, Catherine A.; Hsyu, Tiffany (2016), "The Chemical Composition of Red Giant Branch Stars in the Galactic Globular Clusters NGC 6342 and NGC 6366", The Astronomical Journal, 152 (1): 21, arXiv:1606.08491, Bibcode:2016AJ....152...21J, doi:10.3847/0004-6256/152/1/21, S2CID19812549
Johnson, Christian I.; Caldwell, Nelson; Rich, R. Michael; Pilachowski, Catherine A.; Hsyu, Tiffany (2016), "The Chemical Composition of Red Giant Branch Stars in the Galactic Globular Clusters NGC 6342 and NGC 6366", The Astronomical Journal, 152 (1): 21, arXiv:1606.08491, Bibcode:2016AJ....152...21J, doi:10.3847/0004-6256/152/1/21, S2CID19812549
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Johnson, Christian I.; Caldwell, Nelson; Rich, R. Michael; Pilachowski, Catherine A.; Hsyu, Tiffany (2016), "The Chemical Composition of Red Giant Branch Stars in the Galactic Globular Clusters NGC 6342 and NGC 6366", The Astronomical Journal, 152 (1): 21, arXiv:1606.08491, Bibcode:2016AJ....152...21J, doi:10.3847/0004-6256/152/1/21, S2CID19812549
Johnson, Christian I.; Caldwell, Nelson; Rich, R. Michael; Pilachowski, Catherine A.; Hsyu, Tiffany (2016), "The Chemical Composition of Red Giant Branch Stars in the Galactic Globular Clusters NGC 6342 and NGC 6366", The Astronomical Journal, 152 (1): 21, arXiv:1606.08491, Bibcode:2016AJ....152...21J, doi:10.3847/0004-6256/152/1/21, S2CID19812549