Alves-Brito, A.; Meléndez, J.; Asplund, M.; Ramírez, I.; Yong, D. (2010). “Chemical similarities between Galactic bulge and local thick disk red giants: O, Na, Mg, Al, Si, Ca, and Ti”. Astronomy and Astrophysics513: A35. doi:10.1051/0004-6361/200913444. ISSN0004-6361.
Alves-Brito, A.; Meléndez, J.; Asplund, M.; Ramírez, I.; Yong, D. (2010). “Chemical similarities between Galactic bulge and local thick disk red giants: O, Na, Mg, Al, Si, Ca, and Ti”. Astronomy and Astrophysics513: A35. doi:10.1051/0004-6361/200913444. ISSN0004-6361.