Will, C,M.: The Confrontation Between General Relativity and Experiment. Living Rev. Relativity 9, (2006) (www.livingreviews.org/lrr-2006-3) (HTMLPDF, 960 KB) Chap. 5
Valtonen, M.J. et al.: Confirmation of the Gravitational Wave Energy Loss in the Binary Black Hole System OJ287. American Astronomical Society, AAS Meeting #211, #112.07 (2007) (Abstract)
Will, C,M.: The Confrontation Between General Relativity and Experiment. Living Rev. Relativity 9, (2006) (www.livingreviews.org/lrr-2006-3) (HTMLPDF, 960 KB) Chap. 5