The list of competitors with rewards in IOI’1998 is available on the page International Olympiad in Informatics. Results of IOI 1998.
The bronze medalist certificate:
Related links:
• The 10th International Olympiad in Informatics. Setúbal, Portugal, September 5 — 12, 1998
• The list of competitors in IOI contests from Ukraine is available on the page International Olympiad in Informatics (Ukrainian)