Conformal field theory / Philippe Di Francesco, Pierre Mathieu, David Sénéchal. Di Francesco, Philippe. Mathieu, Pierre, 1957- Sénéchal, David. Conformal invariants. Quantum field theory. QC174.52.C66 D5 1997 530.143 20 DIC Includes bibliographical references and index. New York : Springer, c1997. c1997. 1997 Text xxi, 890 p. : eng Graduate texts in contemporary physics