Coxeter, H.S.M. <br/><br/>
Generators and relations for discrete groups 

 - 3rd ed. 
 - Berlin  Springer-Verlag  1972 
 - ix, 161 p. 
<br/><br/><label>ISBN: </label>3540058370 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Discrete mathematics
<br/><br/><label>Dewey Class. No.: </label>511.1  / COX