Donald E.Knuth   <br/><br/>
Art of computer programming: vol.4A combinatorial algorithms part-1 
Knuth, Donald E. 
 - New Delhi  Pearson  2011 
 - xv,883p. 
 - The classic work extended and refined .
<br/><br/><label>ISBN: </label>9788131761939 
<br/><br/><label>Dewey Class. No.: </label>005.1  / P11(CiSTUP)