Surface and planar discontinuons groups - Zieschang, Heiner; Vogt, Elmar; Coldewey, Hans-Dieter; Stillwey, J. (Berlin : Springer-Verlag, 1980)
Translated from the German- Flachen und ebene diskontinuier-liche gruppen by J.Stillwell
Includes indexes
Bibliography : p. 311-329
Keywords: Discontinuous groups; Combinatorial topology; Surface