P. Jovanović, и L. Č. Popović. (2009)cite arxiv:0903.0978
Comment: 62 pages, 24 figures, to appear as a chapter of the book "Black
Holes: Properties, Formation and Features" (to be published by Nova Science
Publishers, Inc).
A. McNamara, Z. Kuncic, и K. Wu. (2009)cite arxiv:0906.2096
Comment: to appear in "X-ray Polarimetry: A New Window in Astrophysics",
edited by R. Bellazzini, E. Costa, G. Matt and G. Tagliaferri.