35th International Chemistry Olympiad (Greece, 2003) Science, Chemistry, Education, Chemistry Olympiads - 35th International Chemistry Olympiad (Greece, 2003). Athens, 5-14 July 2003. http://www.35icho.uoa.gr/
International Chemistry Olympiad Information Center Science, Chemistry, Education, Chemistry Olympiads - International Chemistry Olympiad Information Center. History, regulations, reports, minutes, and an index of IChO home pages. http://www.icho.sk/