Wilf, Herbert S. <br/><br/>
Algorithms and complexity   
by Herbert S. Wilf. 
 - Englewood Cliffs  Prentice-Hall Intl.  1986 
 - vi, 231p. 
<br/><br/><label>ISBN: </label>013022054X 
<br/><br/><label>Dewey Class. No.: </label>511.3  / N864