Beardon Alan F. <br/><br/>
The Geometry of Discrete Groups 
/ by Alan F.Beardon 
 - New York  Springer Verlag  1983 
 - 337p. 
<br/><br/><label>ISBN: </label>0387907882 
<br/><br/><label>Dewey Class. No.: </label>512.2  / BEA/T