Crook, Aidan C.؛ Huchra, John P.؛ Martimbeau, Nathalie؛ Masters, Karen L.؛ Jarrett, Tom؛ Macri, Lucas M. (2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal. ج. 655 ع. 2: 790–813. arXiv:astro-ph/0610732. Bibcode:2007ApJ...655..790C. DOI:10.1086/510201.
Crook, Aidan C.؛ Huchra, John P.؛ Martimbeau, Nathalie؛ Masters, Karen L.؛ Jarrett, Tom؛ Macri, Lucas M. (2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal. ج. 655 ع. 2: 790–813. arXiv:astro-ph/0610732. Bibcode:2007ApJ...655..790C. DOI:10.1086/510201.
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Paturel G.; Dubois P.; Petit C.; Woelfel F. (2002), Comparison LEDA/SIMBAD octobre 2002. Catalogue to be published in 2003 (بالإنجليزية), Bibcode:2002LEDA.........0P, QID:Q66470150
Crook, Aidan C.؛ Huchra, John P.؛ Martimbeau, Nathalie؛ Masters, Karen L.؛ Jarrett, Tom؛ Macri, Lucas M. (2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal. ج. 655 ع. 2: 790–813. arXiv:astro-ph/0610732. Bibcode:2007ApJ...655..790C. DOI:10.1086/510201.
Paturel G.; Dubois P.; Petit C.; Woelfel F. (2002), Comparison LEDA/SIMBAD octobre 2002. Catalogue to be published in 2003 (بالإنجليزية), Bibcode:2002LEDA.........0P, QID:Q66470150