Penrose, Roger. 1931- The emperor's new mind: concerning computers, minds, and the laws of physics/ Roger Penrose. - Oxford: Oxford University Press, 1989. - xiii, 466 p.: ill.; 24 cm. Includes index. Bibliography: p. 452-460. ISBN: 0198519737 : LCCN: gb 89041775 Nat. Bib. No.: GB89-41775 Subjects--Topical Terms: Cognition.Artificial intelligence. Dewey Class. No.: 153.4 006.3