H. Baumgardt, M. Hilker, A. Sollima et A. Bellini, « Mean proper motions, space orbits and velocity dispersion profiles of Galactic globular clusters derived from Gaia DR2 data », Mean proper motions, space orbits and velocity dispersion profiles of Galactic globular clusters derived from Gaia DR2 data, vol. 482, no 4, , p. 5138-5155 (DOI10.1093/mnras/sty2997, lire en ligne [PDF])
David M. Nataf, Rosemary Wyse, Ricardo P. Schiavon et et al., « The Relationship Between Globular Cluster Mass, Metallicity, and Light Element Abundance Variations », The Astronomical Journal, vol. 158, no 1, , p. 39 pages (DOI10.3847/1538-3881/ab1a27, lire en ligne [PDF])
H. Baumgardt et M. Hilker, « A catalogue of masses, structural parameters and velocity dispersion profiles of 112 Milky Way globular clusters », Monthly Notices of the Royal Astronomical Societ, vol. 478, no 2, , p. 1520-1557 (DOI10.1093/mnras/sty1057, lire en ligne [PDF])
J. Boyles, D. R. Lorimer, P. J. Turk, R. Mnatsakanov, S. Lynch, S. M. Ransom, P. C. Freire et K. Belczynski, « YOUNG RADIO PULSARS IN GALACTIC GLOBULAR CLUSTERS », The Astrophysical Journal, vol. 742#1, , p. 12 pages (DOI10.1088/0004-637X/742/1/51, Bibcode2011ApJ...742...51B, lire en ligne)
H. Baumgardt, M. Hilker, A. Sollima et A. Bellini, « Mean proper motions, space orbits and velocity dispersion profiles of Galactic globular clusters derived from Gaia DR2 data », Mean proper motions, space orbits and velocity dispersion profiles of Galactic globular clusters derived from Gaia DR2 data, vol. 482, no 4, , p. 5138-5155 (DOI10.1093/mnras/sty2997, lire en ligne [PDF])
David M. Nataf, Rosemary Wyse, Ricardo P. Schiavon et et al., « The Relationship Between Globular Cluster Mass, Metallicity, and Light Element Abundance Variations », The Astronomical Journal, vol. 158, no 1, , p. 39 pages (DOI10.3847/1538-3881/ab1a27, lire en ligne [PDF])
H. Baumgardt et M. Hilker, « A catalogue of masses, structural parameters and velocity dispersion profiles of 112 Milky Way globular clusters », Monthly Notices of the Royal Astronomical Societ, vol. 478, no 2, , p. 1520-1557 (DOI10.1093/mnras/sty1057, lire en ligne [PDF])
L. O. Kerber, D. Nardiello, S. Ortolani, V. Barbuy, E. Bica, S. Cassisi, M. Libralato et R. G. Vieira, « Ages of the Bulge Globular Clusters NGC 6522 and NGC 6626 (M28) from HST Proper-motion-cleaned Color–Magnitude Diagrams », The Astrophysical Journal, vol. 853, no 1, , p. 18 pages (DOI10.3847/1538-4357/aaa3fc, lire en ligne [PDF])
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J. Boyles, D. R. Lorimer, P. J. Turk, R. Mnatsakanov, S. Lynch, S. M. Ransom, P. C. Freire et K. Belczynski, « YOUNG RADIO PULSARS IN GALACTIC GLOBULAR CLUSTERS », The Astrophysical Journal, vol. 742#1, , p. 12 pages (DOI10.1088/0004-637X/742/1/51, Bibcode2011ApJ...742...51B, lire en ligne)
J. Boyles, D. R. Lorimer, P. J. Turk, R. Mnatsakanov, S. Lynch, S. M. Ransom, P. C. Freire et K. Belczynski, « YOUNG RADIO PULSARS IN GALACTIC GLOBULAR CLUSTERS », The Astrophysical Journal, vol. 742#1, , p. 12 pages (DOI10.1088/0004-637X/742/1/51, Bibcode2011ApJ...742...51B, lire en ligne)
L. O. Kerber, D. Nardiello, S. Ortolani, V. Barbuy, E. Bica, S. Cassisi, M. Libralato et R. G. Vieira, « Ages of the Bulge Globular Clusters NGC 6522 and NGC 6626 (M28) from HST Proper-motion-cleaned Color–Magnitude Diagrams », The Astrophysical Journal, vol. 853, no 1, , p. 18 pages (DOI10.3847/1538-4357/aaa3fc, lire en ligne [PDF])