Mickens, Ronald E. <br/><br/>
Difference equations: theory and applications 

 - 2nd ed. 
 - New York  Chapman & Hall  1990 
 - xii,448p, 22cm 
<br/><br/><label>ISBN: </label>0442001363 
<br/><br/><label>Dewey Class. No.: </label>515.625,  / D, MIC