Polster, Burkard <br/><br/>
Geometries on Surfaces   
by Burkard Polster and Gunter Steinke 
 - Cambridge  Cambridge University Press  2001 
 - xxii,490p 
 - Encyclopedia of mathematics and its Applications No.84 .
<br/><br/><label>ISBN: </label>9780521660587 
<br/><br/><label>Dewey Class. No.: </label>516.154  / P01