Ferraro, F. R.; Sabbi, E.; Gratton, R.; Piotto, G.; Lanzoni, B.; Carretta, E.; Rood, R. T.; Sills, A.; Fusi Pecci, F.; Moehler, S.; Beccari, G.; Lucatello, S.; Compagni, N. (2006-08-10). "Discovery of Carbon/Oxygen-depleted Blue Straggler Stars in 47 Tucanae: The Chemical Signature of a Mass Transfer Formation Process". The Astrophysical Journal. 647 (1): L53 –L56. arXiv:astro-ph/0610081. Bibcode:2006ApJ...647L..53F. doi:10.1086/507327. S2CID119450832.
Leonard, Peter J. T. (1989). "Stellar collisions in globular clusters and the blue straggler problem". The Astronomical Journal. 98: 217–226. Bibcode:1989AJ.....98..217L. doi:10.1086/115138.
Ferraro, F. R.; Sabbi, E.; Gratton, R.; Piotto, G.; Lanzoni, B.; Carretta, E.; Rood, R. T.; Sills, A.; Fusi Pecci, F.; Moehler, S.; Beccari, G.; Lucatello, S.; Compagni, N. (2006-08-10). "Discovery of Carbon/Oxygen-depleted Blue Straggler Stars in 47 Tucanae: The Chemical Signature of a Mass Transfer Formation Process". The Astrophysical Journal. 647 (1): L53 –L56. arXiv:astro-ph/0610081. Bibcode:2006ApJ...647L..53F. doi:10.1086/507327. S2CID119450832.
Leonard, Peter J. T. (1989). "Stellar collisions in globular clusters and the blue straggler problem". The Astronomical Journal. 98: 217–226. Bibcode:1989AJ.....98..217L. doi:10.1086/115138.
Ferraro, F. R.; Sabbi, E.; Gratton, R.; Piotto, G.; Lanzoni, B.; Carretta, E.; Rood, R. T.; Sills, A.; Fusi Pecci, F.; Moehler, S.; Beccari, G.; Lucatello, S.; Compagni, N. (2006-08-10). "Discovery of Carbon/Oxygen-depleted Blue Straggler Stars in 47 Tucanae: The Chemical Signature of a Mass Transfer Formation Process". The Astrophysical Journal. 647 (1): L53 –L56. arXiv:astro-ph/0610081. Bibcode:2006ApJ...647L..53F. doi:10.1086/507327. S2CID119450832.
Ferraro, F. R.; Sabbi, E.; Gratton, R.; Piotto, G.; Lanzoni, B.; Carretta, E.; Rood, R. T.; Sills, A.; Fusi Pecci, F.; Moehler, S.; Beccari, G.; Lucatello, S.; Compagni, N. (2006-08-10). "Discovery of Carbon/Oxygen-depleted Blue Straggler Stars in 47 Tucanae: The Chemical Signature of a Mass Transfer Formation Process". The Astrophysical Journal. 647 (1): L53 –L56. arXiv:astro-ph/0610081. Bibcode:2006ApJ...647L..53F. doi:10.1086/507327. S2CID119450832.