Kresher, Donald L. <br/><br/>
Combinatorial algorithms  Generation, Enumeration, and search 

 - Boca Raton  CRC Press  1999 
 - 329p.  23 cm H.B. 
 - CRC Press series on .
<br/><br/><label>ISBN: </label>084933988 
<br/><br/><label>Dewey Class. No.: </label>511.6  / KRE