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Bertoldi F., Altenhoff W., Weiss A., Menten K. M., Thum C. (2006). "The trans-Neptunian object UB313 is larger than Pluto". Nature. 439 (7076): 563–564. doi:10.1038/nature04494. PMID16452973.Pemeliharaan CS1: Banyak nama: authors list (link)
John Stansberry, Will Grundy, Mike Brown, John Spencer, David Trilling, Dale Cruikshank, Jean-Luc Margot (2007). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". University of Arizona, Lowell Observatory, California Institute of Technology, NASA Ames Research Center, Southwest Research Institute, Cornell University. Diarsipkan dari versi asli tanggal 2019-08-10. Diakses tanggal 2007-05-18.Pemeliharaan CS1: Banyak nama: authors list (link)
JPL/NASA (2015-04-22). "What is a Dwarf Planet?". Jet Propulsion Laboratory. Diarsipkan dari versi asli tanggal 2021-01-19. Diakses tanggal 2022-01-19.