Benedict, Barbara McArthur, D. W. Chappell, E. Nelan, W. H. Jefferys, W. an Altena, J. Lee, D. Cornell, P. J. Shelus, P. D. Hemeneway, Otto G. Franz, L. Wasserman, R. L. Duncombe, D. Story: Interferometric Astrometry of Proxima Centauri and Barnard's Star Using Hubble Space Telescope Fine Guidance Sensor 3: Detection Limits for sub-Stellar Companions. The Astronomical Journal, 26.4.1999, 118. vsk, nro 2, s. 1086–1100. doi:10.1086/300975ISSN 0004-6256Bibcode:1999AJ....118.1086BarXiv:astro-ph/9905318
The Planet X Saga: Science (Tämä sivu käsittelee Liederin alkuperäistä väitettä, jonka mukaan törmäys tapahtuisi vuonna 2003, mutta sopii yhtä hyvin myös vuoteen 2012) 2003. Phil Plait.
J. R. Houck, D. P. Schmeider, D. E. Danielson, B. Soifer, C. A: Beichman, C. J. Lonsdale ym.: Unidentified IRAS sources: Ultra-High Luminosity Galaxies. The Astrophysical Journal, 1985, 290. vsk, s. 5–8. doi:10.1086/184431Bibcode:1985ApJ...290L...5H
Myles Standish: Planet X – No dynamical evidence in the optical observations. Astronomical Journal, 16.7.1992, 105. vsk, nro 5, s. 200–2006. doi:10.1086/116575Bibcode:1993AJ....105.2000S
Benedict, Barbara McArthur, D. W. Chappell, E. Nelan, W. H. Jefferys, W. an Altena, J. Lee, D. Cornell, P. J. Shelus, P. D. Hemeneway, Otto G. Franz, L. Wasserman, R. L. Duncombe, D. Story: Interferometric Astrometry of Proxima Centauri and Barnard's Star Using Hubble Space Telescope Fine Guidance Sensor 3: Detection Limits for sub-Stellar Companions. The Astronomical Journal, 26.4.1999, 118. vsk, nro 2, s. 1086–1100. doi:10.1086/300975ISSN 0004-6256Bibcode:1999AJ....118.1086BarXiv:astro-ph/9905318
Konstantin Batygin, Micahel E. Brown: Evidence for a distant giant planet in the Solar system. The Astronomical Journal, 20.1.2016, 151. vsk, nro 2. doi:10.3847/0004-6256/151/2/22
J. R. Houck, D. P. Schmeider, D. E. Danielson, B. Soifer, C. A: Beichman, C. J. Lonsdale ym.: Unidentified IRAS sources: Ultra-High Luminosity Galaxies. The Astrophysical Journal, 1985, 290. vsk, s. 5–8. doi:10.1086/184431Bibcode:1985ApJ...290L...5H
Myles Standish: Planet X – No dynamical evidence in the optical observations. Astronomical Journal, 16.7.1992, 105. vsk, nro 5, s. 200–2006. doi:10.1086/116575Bibcode:1993AJ....105.2000S
Benedict, Barbara McArthur, D. W. Chappell, E. Nelan, W. H. Jefferys, W. an Altena, J. Lee, D. Cornell, P. J. Shelus, P. D. Hemeneway, Otto G. Franz, L. Wasserman, R. L. Duncombe, D. Story: Interferometric Astrometry of Proxima Centauri and Barnard's Star Using Hubble Space Telescope Fine Guidance Sensor 3: Detection Limits for sub-Stellar Companions. The Astronomical Journal, 26.4.1999, 118. vsk, nro 2, s. 1086–1100. doi:10.1086/300975ISSN 0004-6256Bibcode:1999AJ....118.1086BarXiv:astro-ph/9905318
Chadwick A. Trujillo, M. E. Brown, D. L. Rabinowitz: The Surface of Sedna in the Near-infrared. Bulletin of the American Astronomical Society, 2007, 39. vsk. Bibcode:2007DPS....39.4906T
John Stansberry, Will Grundy, Mike Brown, Dale Cruikshank, John Spencer, David Trilling, Jean-Luc Margot: ”Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope”, The Solar System Beyond Neptune, s. 161–179. University of Arizona press. ISBN 0-8165-2755-5Teoksen verkkoversio.
Benedict, Barbara McArthur, D. W. Chappell, E. Nelan, W. H. Jefferys, W. an Altena, J. Lee, D. Cornell, P. J. Shelus, P. D. Hemeneway, Otto G. Franz, L. Wasserman, R. L. Duncombe, D. Story: Interferometric Astrometry of Proxima Centauri and Barnard's Star Using Hubble Space Telescope Fine Guidance Sensor 3: Detection Limits for sub-Stellar Companions. The Astronomical Journal, 26.4.1999, 118. vsk, nro 2, s. 1086–1100. doi:10.1086/300975ISSN 0004-6256Bibcode:1999AJ....118.1086BarXiv:astro-ph/9905318
