Elaydi, S.N <br/><br/>
Introduction to difference equations 
S.N. Elaydi 
 - New York  Springer  1996 
 - xiii  389 
 - UTM .
<br/><br/><label>ISBN: </label>0-387-94582-2 
<br/><br/><label>Dewey Class. No.: </label>11.02  / ELAY