The IMO compendium:
Djukic, Dusan.
The IMO compendium: a collection of problems suggested for the International Mathematical Olympiads, 1959-2004 Dusan Djukic and et al. - New Delhi : Springer, 2010. - xiv, 740 p.
9788184895254 = Mathematics collection
Mathematics.
Mathematics--Competitions.
International Mathematical Olympiad.
510.76 D649I
The IMO compendium: a collection of problems suggested for the International Mathematical Olympiads, 1959-2004 Dusan Djukic and et al. - New Delhi : Springer, 2010. - xiv, 740 p.
9788184895254 = Mathematics collection
Mathematics.
Mathematics--Competitions.
International Mathematical Olympiad.
510.76 D649I