Wilf, Herbert S. <br/><br/>
Generatingfunctionology 
by Herbert S Wilf 
 - 3rd ed. 
 - Boca Raton  CRC Press  2006 
 - x, 245p. 
<br/><br/><label>ISBN: </label>9781568812793 
<br/><br/><label>Dewey Class. No.: </label>515.55  / P06 (MA)