Tài liệu tham khảo WikiPedia: NGC_381 http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=... //arxiv.org/abs/1606.06425 //arxiv.org/abs/astro-ph/0203028 //doi.org/10.1007%2F978-3-319-03170-5 //doi.org/10.1051%2F0004-6361%2F201628944 //doi.org/10.1051%2F0004-6361:20078525 //doi.org/10.1086%2F338309 //doi.org/10.1177%2F002182860603700301 //doi.org/10.25518%2F0037-9565.9003 http://server1.wikisky.org/starview?object=NGC+381
