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Roger Penrose. The Road to Reality: A Complete Guide to the Laws of the Universe. — Knopf, 2005. — 624 с. — ISBN 0-679-45443-8.
Lee Smolin. The Trouble with Physics: The Rise of String Theory, the Fall of a Science, and What Comes Next. — New York: Houghton Mifflin Co., 2006. — 392 с. — ISBN 0-618-55105-0.
Peter Woit. Not Even Wrong - The Failure of String Theory And the Search for Unity in Physical Law. — London: Jonathan Cape &: New York: Basic Books, 2006. — 290 с. — ISBN 0-224-07605-1 & ISBN 978-0-465-09275-8.