Thực đơn
Messier_54Thực đơn
Messier_54Liên quan
Messier 54 Messier 5 Messier 52 Messier 4 Messier 59 Messier 74 Messier 84 Messier 34 Messier 41 Messier 48Tài liệu tham khảo
WikiPedia: Messier_54 http://adsabs.harvard.edu/abs/2007ApJ...667L..57S http://adsabs.harvard.edu/abs/2008AJ....136.1147B http://adsabs.harvard.edu/abs/2009ApJ...699L.169I http://adsabs.harvard.edu/abs/2010ApJ...714L...7C //arxiv.org/abs/0708.0027 //arxiv.org/abs/0807.0105 //arxiv.org/abs/0906.4894 //arxiv.org/abs/1002.1963 //arxiv.org/abs/astro-ph/0510217 //dx.doi.org/10.1086%2F522003