Beardon, Alan F. The geometry of discrete groups/ Alan F. Beardon. - New York: Springer-Verlag, c1983. - xii, 337 p.: ill.; 24 cm. - Graduate texts in mathematics; 91 . Includes index. Bibliography: p. [329]-333. ISBN: 0387907882 LCCN: 82019268 //r852 Subjects--Topical Terms: Groupes discrets.Isométrie (Mathématiques).Mobius, transformations de.Discrete groups.Isometrics (Mathematics)Mobius transformationsGeometry, Hyperbolic. Dewey Class. No.: 512.2 / B368g