Optically and X-Ray Selected Clusters of Galaxies in the XMM/2dF/SDSS Survey
1998 ◽
Vol 298
(2)
◽
pp. 416-432
◽
1979 ◽
Vol 366
(1726)
◽
pp. 391-402
◽
2006 ◽
Vol 2
(S235)
◽
pp. 203-203
2008 ◽
pp. 395-434
◽