Wilf, Herbert S. <br/><br/>
Algorithms and complexity / 
Herbert S. Wilf. 
 - [S.l.] :  A K Peters/CRC Press,  2002. 
 - 228 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>1568811780 9781568811789 
<br/><br/><label>Dewey Class. No.: </label>511.8