Elaydi, Saber N. <br/><br/>
Introduction to difference equations   
by Saber N. Elaydi 
 - New York  Springer Verlag  1996 
 - xiii, 389p. 
 - Undergraduate Texts in Mathematics .
<br/><br/><label>ISBN: </label>0387945822 
<br/><br/><label>Dewey Class. No.: </label>515.625  / N96