Jensen, Joseph B.؛ Tonry, John L.؛ Barris, Brian J.؛ Thompson, Rodger I.؛ وآخرون (فبراير 2003). "Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations". Astrophysical Journal. ج. 583 ع. 2: 712–726. arXiv:astro-ph/0210129. Bibcode:2003ApJ...583..712J. DOI:10.1086/345430.
Davis، David S.؛ Mushotzky؛ Mulchaey؛ Worrall؛ وآخرون (1995). "Diffuse hot gas in the NGC 4261 group of galaxies". Astrophysical Journal. ج. 444 ع. 2: 582–589. Bibcode:1995ApJ...444..582D. DOI:10.1086/175632.
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Jensen, Joseph B.؛ Tonry, John L.؛ Barris, Brian J.؛ Thompson, Rodger I.؛ وآخرون (فبراير 2003). "Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations". Astrophysical Journal. ج. 583 ع. 2: 712–726. arXiv:astro-ph/0210129. Bibcode:2003ApJ...583..712J. DOI:10.1086/345430.
Davis، David S.؛ Mushotzky؛ Mulchaey؛ Worrall؛ وآخرون (1995). "Diffuse hot gas in the NGC 4261 group of galaxies". Astrophysical Journal. ج. 444 ع. 2: 582–589. Bibcode:1995ApJ...444..582D. DOI:10.1086/175632.