Andreescu, Titu  . <br/><br/>
Mathematical olympiad treasures /  
by Titu Andreescu and Bogdan Enescu. 
 - New Delhi :   Springer (India) Pvt. Ltd. ,   2004 
 - vi, 234p :  
<br/><br/><label>ISBN: </label>978-81-8128-322-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number theory
<br/><br/><label>Dewey Class. No.: </label>B2  / P4;3