Cassisi, S.; Salaris, M.; Anderson, J.; Piotto, G.; Pietrinferni, A.; Milone, A.; Bellini, A.; Bedin, L. R. (2009). "Hot Horizontal Branch Stars in ω Centauri: Clues about their Origin from the Cluster Color Magnitude Diagram". The Astrophysical Journal. 702 (2): 1530. arXiv:0907.3550. Bibcode:2009ApJ...702.1530C. doi:10.1088/0004-637X/702/2/1530. S2CID2015110.
Cassisi, S.; Salaris, M.; Anderson, J.; Piotto, G.; Pietrinferni, A.; Milone, A.; Bellini, A.; Bedin, L. R. (2009). "Hot Horizontal Branch Stars in ω Centauri: Clues about their Origin from the Cluster Color Magnitude Diagram". The Astrophysical Journal. 702 (2): 1530. arXiv:0907.3550. Bibcode:2009ApJ...702.1530C. doi:10.1088/0004-637X/702/2/1530. S2CID2015110.
Cassisi, S.; Salaris, M.; Anderson, J.; Piotto, G.; Pietrinferni, A.; Milone, A.; Bellini, A.; Bedin, L. R. (2009). "Hot Horizontal Branch Stars in ω Centauri: Clues about their Origin from the Cluster Color Magnitude Diagram". The Astrophysical Journal. 702 (2): 1530. arXiv:0907.3550. Bibcode:2009ApJ...702.1530C. doi:10.1088/0004-637X/702/2/1530. S2CID2015110.
Cassisi, S.; Salaris, M.; Anderson, J.; Piotto, G.; Pietrinferni, A.; Milone, A.; Bellini, A.; Bedin, L. R. (2009). "Hot Horizontal Branch Stars in ω Centauri: Clues about their Origin from the Cluster Color Magnitude Diagram". The Astrophysical Journal. 702 (2): 1530. arXiv:0907.3550. Bibcode:2009ApJ...702.1530C. doi:10.1088/0004-637X/702/2/1530. S2CID2015110.