Davidoff, G.  . <br/><br/>
Elementary number theory, group theory and ramanujan graphs /  
by G. Davidoff, P. Sarnak and A. Valette. 
 - Cambridge :   Cambridge University Press ,   2003 
 - 144p :  
<br/><br/><label>ISBN: </label>0-521-53143-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>B13  / P3