Davidoff, Giuliana <br/><br/>
Elementary number theory, group theory and Ramanujan graphs   
by Giuliana Davidoff, Peter Asrnak and Alain Valette 
 - UK  Cambridge  2003 
 - viii,144p. 
<br/><br/><label>ISBN: </label>0521531438 
<br/><br/><label>Dewey Class. No.: </label>512.7  / P031