Derbyshire, John. Prime obsession : Bernhard Riemann and the greatest unsolved problem in mathematics / John Derbyshire. - Washington, DC : Joseph Henry Press, c2003. - xv, 422 p. : ill. ; 23 cm. Includes index. ISBN: 0309085497 LCCN: 2002156310 Subjects--Personal Names: Riemann, Bernhard, 1826-1866. Subjects--Topical Terms: Numbers, Prime.Series. LC Class. No.: QA246 / .D47 2003 Dewey Class. No.: 512.7/3