Kolman, Bernard Busby, Robert C Ross, Sharon <br/><br/>
Discrete Mathematical Structures 

 - 3rd Ed. 
 - New Delhi  PHI  2001 
 - p.524 
<br/><br/><label>ISBN: </label>8120311477 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic<br/>Relations and Digraphs<br/>Topics in Graph Theory
<br/><br/><label>Dewey Class. No.: </label>512 K811D