Dorichenco,Sergey <br/><br/>
Moscow math circle : weekbyweek problem sets 

 - Hyderabad:  Universities Press (India),  2012. 
 - XXIX, 370. 
<br/><br/><label>ISBN: </label>9788173719936 
<br/><br/><label>Dewey Class. No.: </label>510  / DOR