undy; M. Brown; Cruikshank, D.; Spencer, J.; Trilling, D.; Margot, J.-L. (2008). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". The Solar System beyond Neptune. University of Arizona Press: 161. arXiv:astro-ph/0702538. Bibcode:2008ssbn.book..161S.↑ 5.0 5.1 5.2 J. Licandro, N. Pinilla-Alonso, M. Pedani, E. Oliva, G. P. Tozzi, W. M. Grundy (2006). "The methane ice rich surface of large TNO 2005 FY9: a Pluto-twin in the trans-neptunian belt?". Astronomy and Astrophysics. 445 (3): L35–L38. Bibcode:2006A&A...445L..35L. doi:10.1051/0004-6361:200500219.{{cite journal}}:  CS1 maint: multiple names: authors list (link)↑ 6.0 6.1 6.2 උපුටාදැක්වීම් දෝෂය: අනීතික <ref> ටැගය;brown නමැති ආශ්‍රේයන් සඳහා කිසිදු පෙළක් සපයා නොතිබුණි↑ S.C. Tegler, W.M. Grundy, F. Vilas, W. Romanishin, D.M. Cornelison and G.J. Consolmagno (June 2008). "Evidence of N2-ice on the surface of the icy dwarf Planet 136472 (2005 FY9)". Icarus. 195 (2): 844–850. arXiv:0801.