Lovasz L , Pelikan J And Vesztergombi <br/><br/>
Discrete mathematics: elementary and beyond 

 - 1 st 
 - New York  SPRIGER-VERLAG  2004 
 - ix,290, p. 
<br/><br/><label>ISBN: </label>81-8128-065-2 
<br/><br/><label>Subjects--Index Terms: </label>maths