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• H. J. Eckmiller, D. S. Hudson, and T. H. Reiprich. Testing the low-mass end of X-ray scaling relations with a sample of Chandra galaxy groups. aap , 535:A105, nov 2011.

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• A. Finoguenov, M. G. Watson, M. Tanaka, C. Simpson, M. Cirasuolo, J. S. Dunlop, J. A. Peacock, D. Farrah, M. Akiyama, Y. Ueda, V. Smol v cic, G. Stewart, S. Rawlings, C. van Breukelen, O. Almaini, L. Clewley, D. G. Bonfield, M. J. Jarvis, J. M. Barr, S. Foucaud, R. J. McLure, K. Sekiguchi, and E. Egami. X-ray groups and clusters of galaxies in the Subaru-XMM Deep Field. mnras , 403:2063-2076, apr 2010.

• S. F. Helsdon and T. J. Ponman. The intragroup medium in loose groups of galaxies. mnras , 315:356-370, jun 2000.

• P. J. Humphrey, D. A. Buote, F. Brighenti, H. M. L. G. Flohic, F. Gastaldello, and W. G. Mathews. Tracing the Gas to the Virial Radius (R ₁00) in a Fossil Group. apj , 748:11, mar 2012.

• L. R. Jones, T. J. Ponman, A. Horton, A. Babul, H. Ebeling, and D. J. Burke. The nature and space density of fossil groups of galaxies. mnras , 343:627-638, August 2003.

• H. Khosroshahi, L. Jones, and T. Ponman. An old galaxy group: Chandra X-ray observations of the nearby fossil group NGC 6482. mn , in press:(astroph/0401023), 2004.

• H. G. Khosroshahi, B. J. Maughan, T. J. Ponman, and L. R. Jones. A fossil galaxy cluster: an X-ray and optical study of RX J1416.4+2315. mnras , 369:1211-1220, jul 2006.

• A. Leauthaud, A. Finoguenov, J.-P. Kneib, J. E. Taylor, R. Massey, J. Rhodes, O. Ilbert, K. Bundy, J. Tinker, M. R. George, P. Capak, A. M. Koekemoer, D. E. Johnston, Y.-Y. Zhang, N. Cappelluti, R. S. Ellis, M. Elvis, S. Giodini, C. Heymans, O. Le Fèvre, S. Lilly, H. J. McCracken, Y. Mellier, A. Réfrégier, M. Salvato, N. Scoville, G. Smoot, M. Tanaka, L. Van Waerbeke, and M. Wolk. A Weak Lensing Study of X-ray Groups in the Cosmos Survey: Form and Evolution of the Mass-Luminosity Relation. apj , 709:97-114, jan 2010.

• I. G. McCarthy, J. Schaye, T. J. Ponman, R. G. Bower, C. M. Booth, C. Dalla Vecchia, R. A. Crain, V. Springel, T. Theuns, and R. P. C. Wiersma. The case for AGN feedback in galaxy groups. mnras , 406:822-839, aug 2010.

• J. S. Mulchaey. X-ray Properties of Groups of Galaxies. araa , 38:289-335, 2000.

• J. P. F. Osmond and T. J. Ponman. The GEMS project: X-ray analysis and statistical properties of the group sample. mnras , 350:1511-1535, jun 2004.

• E. O'Sullivan, J. M. Vrtilek, J. C. Kempner, L. P. David, and J. C. Houck. AWM 4 - an isothermal cluster observed with XMM-Newton. mnras , 357:1134-1150, March 2005.

• E. K. Panagoulia, A. C. Fabian, and J. S. Sanders. A volume-limited sample of X-ray galaxy groups and clusters - I. Radial entropy and cooling time profiles. mnras , dec 2013.

• T. J. Ponman, D. J. Allan, L. R. Jones, M. Merrifield, I. M. McHardy, H. J. Lehto, and G. A. Luppino. A Possible Fossil Galaxy Group. nat , 369:462--+, June 1994.

• M. Sun, G. M. Voit, M. Donahue, C. Jones, W. Forman, and A. Vikhlinin. Chandra Studies of the X-Ray Gas Properties of Galaxy Groups. apj , 693:1142-1172, mar 2009.

• M. Sun. Hot gas in galaxy groups: recent observations. New Journal of Physics, 14:045004, apr 2012.