Gelernter, David Hillel. Mirror worlds, or, The day software puts the universe in a shoebox-- : how it will happen and what it will mean - New York : Oxford University Press, 1991. - 237 p. : 25 cm. Includes bibliographical references and index. ISBN: 019507906x LCCN: 91019178 Subjects--Topical Terms: Computer programmingSoftware engineering Dewey Class. No.: 005.1 / GEL