Spectroscopic Confirmation of the Fifth Image of SDSS J1004+4112 and Implications for the M-BH-sigma(*) Relation at z=0.68
Journal article published in 2008 by
N. Inada,
M. Oguri,
Falco Ee,
Broadhurst Tj,
Ofek Eo,
Kochanek Cs,
K. Sharon,
Graham Smith 
