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• Black holes, Wormholes and Time Travel , a Royal Society Lecture
• SF Chronophysics Archived 2020-11-11 at the Wayback Machine ., a discussion of Time Travel as it relates to science fiction
• On the Net: Time Travel Archived 2005-03-08 at the Wayback Machine . by James Patrick Kelly
• ????:HowStuffWorks
• Time Travel in Flatland? Archived 2005-03-19 at the Wayback Machine .
• NOVA Online: Time Travel
• Professor Predicts Human Time Travel This Century
• Time Traveler Convention Archived 2007-10-28 at the Wayback Machine . at MIT
• Time Machines in Physics ? almost 200 citations from 1937 through 2001
• Time Travel and Modern Physics at the Stanford Encyclopedia of Philosophy
• Time Travel at the Internet Encyclopedia of Philosophy
• Aparta Krystian: Conventional Models of Time and Their Extensions in Science Fiction Archived 2013-06-03 at the Wayback Machine .
• Time travellers from the future 'could be here in weeks'
• Time machine on arxiv.org
• Time Travel impossible, Scientists say
• Time Travel a No Go? No Way