Black hole masses and Eddington ratios of agns contributing most of the XRB
Proceedings article published in 2006 by
L. Ballo,
S. Cristiani,
L. Danese,
G. Fasano,
F. Fontanot,
M. Nonino 
,
P. Tozzi,
E. Vanzella
,
P. Tozzi,
E. Vanzella
