Andreescu, Titu <br/><br/>
Mathematical olympiad challenges 
by Titu Andreescu and Razvan Gelca 
 - 2nd ed. 
 - Boston  Birkhauser  2009 
 - xvii, 283p. 
<br/><br/><label>ISBN: </label>9788132214854 
<br/><br/><label>Dewey Class. No.: </label>510.76  / P09 (ECE)