Davidoff, G., et al <br/><br/>
Elementary number theory, group theory & ramanujan graphs 
G. Davidoff, et al 
 - Cambridge  Cambridge University Press  2003 
 - viii  144 
 - London mathematical society student texts 55 .
<br/><br/><label>ISBN: </label>9780521531436 
<br/><br/><label>Dewey Class. No.: </label>3.01+2.08  / DAVI