The Kerr Spacetime: Rotating Black Holes in General Relativity
,Strange mathematical term changes our entire view of black holes | Live Science,Exploring Black Holes: Introduction to General Relativity: Taylor, Edwin F., Wheeler, John Archibald: 9780201384239: Amazon.com: Books,The Kerr Spacetime: Rotating Black Holes in General Relativity,A Relativist's Toolkit: The Mathematics of Black-Hole Mechanics