Garey, Michael R. <br/><br/>
Computers and intractability :  a guide to the theory of NP-completeness / 
Michael R. Garey, David S. Johnson 
 - San Francisco :  W. H. Freeman,  1979 
 - x, 338 p. :  ill. ;  24 cm. 
 - A Series of books in the mathematical sciences .
<br/><br/> Includes indexes 
<br/><br/>Bibliography: p.  291 -325 
<br/><br/><label>ISBN: </label>0716710447 0716710455 (pbk) 
<br/><br/><label>LCCN: </label>78-012361 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic digital computers--Programming<br/>Algorithms<br/>Computational complexity