Choudum, S.A <br/><br/>
A First Course in Graph Theory / 
by S.A. Choudum 
 - New Delhi:  Macmillan india,  2007 
 - p.124 
<br/><br/><label>ISBN: </label>0333920406 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics<br/>General principles of mathematics<br/>Graph Theory
<br/><br/><label>Dewey Class. No.: </label>511.5  / CHO-F