William Kaufmann,

The Cosmic Frontiers of General Relativity , Little, Brown, Boston, 1977

Michael Moorcock,

Behold the Man , Mayflower, London, 1970

Ward Moore,

Bring the Jubilee , Avon, New York, 1976

Time Machine Tales , Springer, London, 2017

Explorations of the Marvellous , Fontana, London, 1978

Günter Nimtz and Astrid Haibel,

Zero Time Space , Wiley-VCH, Weinheim, 2008

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