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- [32] Time-resolved ultraviolet observations of the globular cluster x-ray source in NGC 6624: The shortest known period binary system ASTROPHYSICAL JOURNAL, 1997, 482 (01): : L69 - L72
- [33] Serendipitous discovery of a cataclysmic variable in the globular cluster NGC 6624 ASTRONOMICAL JOURNAL, 1999, 118 (06): : 2888 - 2893
- [34] UHURU OBSERVATIONS OF GLOBULAR CLUSTER X-RAY SOURCE NGC 6712 ASTROPHYSICAL JOURNAL, 1977, 211 (01): : L9 - L13
- [35] A VARIABLE ULTRALUMINOUS X-RAY SOURCE IN A GLOBULAR CLUSTER IN NGC 4649 ASTROPHYSICAL JOURNAL, 2012, 760 (02):
- [36] CENTRAL REGION OF X-RAY GLOBULAR CLUSTER NGC-1851 ASTROPHYSICAL JOURNAL, 1977, 213 (03): : L105 - &
- [37] Optical counterparts of X-ray point sources observed by Chandra in NGC 5128:: 20 new globular cluster X-ray sources ASTROPHYSICAL JOURNAL, 2004, 600 (02): : 716 - 728
- [38] X-RAY SOURCES AND THEIR OPTICAL COUNTERPARTS IN THE GALACTIC GLOBULAR CLUSTER M12 (NGC 6218) ASTROPHYSICAL JOURNAL, 2009, 705 (01): : 175 - 183
- [39] An ultraviolet-excess optical candidate for the luminous globular cluster x-ray source in NGC 1851 ASTROPHYSICAL JOURNAL, 1996, 472 (02): : L97 - &
- [40] A VARIABLE BLACK HOLE X-RAY SOURCE IN AN NGC 1399 GLOBULAR CLUSTER ASTROPHYSICAL JOURNAL, 2010, 721 (01): : 323 - 328