IMO Compendium. The
The IMO Compendium : a collection of problems suggested for the International Mathematical Olympiads: 1959-2004 / Dušan Djukić... [et al.]. - New York [etc.] : Springer Science + Business Media, 2006. - XIV, 740 str. : 200 ilustr. ; 25 cm. - (Problem Books in Mathematics)
ISBN 0-387-24299-6