Encyclopedia of Mathematics and its Applications <br/><br/>
Graph theory / 

 - Massachusetts:  Addison-Wesley,  1984 
 - 333p. 
 - Encyclopedia of Mathematics and its applications:  21 .
<br/><br/><label>ISBN: </label>978-0521302418 0521302412 
<br/><br/><label>Dewey Class. No.: </label>510.3  / En56.21