Black Sea | Time (magazine) | Time | Black Forest | Black Sabbath | Time Warner | The Black Eyed Peas | black | Black | Black Death | The Black Keys | black metal | black-and-white | Time Warner Cable | Jack Black | Cilla Black | Creature from the Black Lagoon | Ladysmith Black Mambazo | black comedy | The Black Crowes | Greenwich Mean Time | Pirates of the Caribbean: The Curse of the Black Pearl | Men in Black | Eastern Time Zone | Black Canary | time travel | Coordinated Universal Time | Black people | Black Label Society | Black Hills |
Thorne, Kip, Black Holes and Time Warps: Einstein's Outrageous Legacy, W. W. Norton & Company; Reprint edition, January 1, 1995.
The debate on this matter is described by Kip S. Thorne in the book Black Holes and Time Warps, and a more technical discussion can be found in The quantum physics of chronology protection by Matt Visser.