Da Costa، G. S.؛ Rejkuba، M.؛ Jerjen، H.؛ Grebel، E. K. (2010). "Ancient Stars Beyond the Local Group: RR Lyrae Variables and Blue Horizontal Branch Stars in Sculptor Group Dwarf Galaxies". The Astrophysical Journal. ج. 708 ع. 2: L121. arXiv:0912.1069. Bibcode:2010ApJ...708L.121D. DOI:10.1088/2041-8205/708/2/L121.
doi.org
Da Costa، G. S.؛ Rejkuba، M.؛ Jerjen، H.؛ Grebel، E. K. (2010). "Ancient Stars Beyond the Local Group: RR Lyrae Variables and Blue Horizontal Branch Stars in Sculptor Group Dwarf Galaxies". The Astrophysical Journal. ج. 708 ع. 2: L121. arXiv:0912.1069. Bibcode:2010ApJ...708L.121D. DOI:10.1088/2041-8205/708/2/L121.
Adams، F. C.؛ Bodenheimer، P.؛ Laughlin، G. (2005). "M dwarfs: Planet formation and long term evolution". Astronomische Nachrichten. ج. 326 ع. 10: 913. Bibcode:2005AN....326..913A. DOI:10.1002/asna.200510440.
harvard.edu
ui.adsabs.harvard.edu
Da Costa، G. S.؛ Rejkuba، M.؛ Jerjen، H.؛ Grebel، E. K. (2010). "Ancient Stars Beyond the Local Group: RR Lyrae Variables and Blue Horizontal Branch Stars in Sculptor Group Dwarf Galaxies". The Astrophysical Journal. ج. 708 ع. 2: L121. arXiv:0912.1069. Bibcode:2010ApJ...708L.121D. DOI:10.1088/2041-8205/708/2/L121.
Adams، F. C.؛ Bodenheimer، P.؛ Laughlin، G. (2005). "M dwarfs: Planet formation and long term evolution". Astronomische Nachrichten. ج. 326 ع. 10: 913. Bibcode:2005AN....326..913A. DOI:10.1002/asna.200510440.