Creignou, Nadia <br/><br/>
Complexity classifications of boolean constraint satisfaction problems  / 

 - Philadelphia:  SIAM,  2001 
 - xii, 106p. Bibl. Index. 
 - SIAM monographs on Discrete Mathematics and applications .
<br/><br/><label>ISBN: </label>0898714796 
<br/><br/><label>Dewey Class. No.: </label>511.3  / C914.CC