Art of mathematics / 
by Bollobás, Béla. 
 - Cambridge :  Cambridge University Press,  2007 
 - xiv, 370 p.  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0521872286 | 0521693950 (Pbk.) | 9780521872287 | 9780521170109