Citation:Eastman J, Martini P, Sivakoff G, Kelson DD, Mulchaey JS, Tran K-V. First Measurement of a Rapid Increase in the AGN Fraction in High-Redshift Clusters of Galaxies. \apjl. 2007;664 (1) :L9-L12.Download CitationDOI BibTex Tagged XML Date Published:jul DOI