Knuth, Donald E <br/><br/>
Art of computer programming VOL 4A combinatorial algorithms Part 1 
Donald E Knuth 
 - 3rd ed. 
 - New Delhi  Pearson  2011 
 - xv, 883p. 
<br/><br/><label>ISBN: </label>9788131761939 
<br/><br/><label>Dewey Class. No.: </label>005.1  / P11;1.4A.1 (CSA)