ISBN 9781441998538 books & textbook
The IMO Compendium: A Collection of Problems Suggested for The International Mathematical Olympiads: 1959-2009 Second Edition (Problem Books in Mathematics)
Djukić, Dušan Janković, Vladimir Matić, Ivan Petrović, Nikola
Springer /2011-05-16 Hardcover / 823 Pages
isbn-10: 1441998535 / isbn-13: 9781441998538
