Garey, Michael R.  David S. Johnson <br/><br/>
Computer and intracability  a guide to the theory of NP-completness 

 - New York  Freeman and company  1979 
 - ix, 339 p.  : ill.  ; 23cm. 
<br/><br/><label>ISBN: </label>9780716710448 (hbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic digital computers--Algorithms--Programming--NP-hardness--Graph theory--Language theory--Automata theory--Program optimization--FEAS
<br/><br/><label>Dewey Class. No.: </label>519.4  / GAR