Chartrand, G <br/><br/>
Graphs and digraphs 

 - 4 
 - Boca Raton  Chapman and Hall/CRC  2005 
 - viii, 386p. : ill.  
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>1584883901 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Graph theory