(Ingelesez)François, P.; Matteucci, F.; Cayrel, R.; Spite, M.; Spite, F.; Chiappini, C.. (2004-06-22). [http://adsabs.harvard.edu/abs/2004A&A...421..613F «The evolution of the Milky Way from
its earliest phases: Constraints on stellar nucleosynthesis»] Astronomy & Astrophysics 421 (2): 613–621. doi:10.1051/0004-6361:20034140. ISSN0004-6361. (Noiz kontsultatua: 2018-10-10).
(Ingelesez)P., Ruiz-Lapuente,; S., Blinnikov,; R., Canal,; J., Mendez,; E., Sorokina,; A., Visco,; N., Walton,. (2000). «Type IA supernova progenitors.»Memorie della Societa Astronomica Italiana 71 ISSN0037-8720. (Noiz kontsultatua: 2018-10-04).
(Ingelesez)François, P.; Matteucci, F.; Cayrel, R.; Spite, M.; Spite, F.; Chiappini, C.. (2004-06-22). [http://adsabs.harvard.edu/abs/2004A&A...421..613F «The evolution of the Milky Way from
its earliest phases: Constraints on stellar nucleosynthesis»] Astronomy & Astrophysics 421 (2): 613–621. doi:10.1051/0004-6361:20034140. ISSN0004-6361. (Noiz kontsultatua: 2018-10-10).
(Ingelesez)P., Ruiz-Lapuente,; S., Blinnikov,; R., Canal,; J., Mendez,; E., Sorokina,; A., Visco,; N., Walton,. (2000). «Type IA supernova progenitors.»Memorie della Societa Astronomica Italiana 71 ISSN0037-8720. (Noiz kontsultatua: 2018-10-04).
(Ingelesez)François, P.; Matteucci, F.; Cayrel, R.; Spite, M.; Spite, F.; Chiappini, C.. (2004-06-22). [http://adsabs.harvard.edu/abs/2004A&A...421..613F «The evolution of the Milky Way from
its earliest phases: Constraints on stellar nucleosynthesis»] Astronomy & Astrophysics 421 (2): 613–621. doi:10.1051/0004-6361:20034140. ISSN0004-6361. (Noiz kontsultatua: 2018-10-10).