Lewis, Harry R. <br/><br/>
Elements of the theory of computation / 
Harry R. Lewis, Christos H. Papadimitriou. 
 - 2nd ed. 
 - Upper Saddle River, N.J. :  Prentice-Hall,  c1998. 
 - 361 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0132624788 
<br/><br/><label>LCCN: </label>97013879 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computational complexity<br/>Formal languages<br/>Logic Symbolic and mathematical<br/>Machine theory
<br/><br/><label>LC Class. No.: </label>QA267