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Paul Davies, About Time ISBN 0-684-81822-1

How to Build a Time Machine ISBN 0-14-200186-4

J. Richard Gott, Time Travel in Einstein's Universe: The Physical Possibilities of Travel Through Time ISBN 0-618-25735-7

Gribbin, In Search of Schrodinger's Cat

Paul J. Nahin, Time Machines: Time Travel in Physics, Metaphysics, and Science Fiction ISBN 0-387-98571-9

Pagels, Perfect Symmetry, the Search for the Beginning of Time

Clifford A. Pickover, Time: A Traveler's Guide ISBN 0-19-513096-0

Kornel Lanczos, [http://www.springerlink.com/app/home/contribution.asp?wasp=4ae3e035ce0c4a6a8df3d5e54cb6b76f&referrer=parent&backto=issue,8,11;journal,101,103;linkingpublicationresults,1:101151,1 On a Stationary Cosmology in the Sense of Einsteins Theory of Gravitation], 1924, republished in 1997 by Springer Science+Business Media B.V.

W.J. van Stockum, The Gravitational Field of a Distribution of Particles Rotating about an Axis of Symmetry , 1936, Proceedings of the Royal Society of Edinburgh.

Frank J. Tipler, Rotating Cylinders and the Possibility of Global Causality Violation, Physical Review D 9 (1974), 2203