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           | Description | 
           
             English: From left to right, Gabriel Carroll, USA, Reid Barton, USA, Zhiqiang Zhang, China, and Liang Xiao, China, the four perfect scorers in the 2001  International Mathematical Olympiad held in USA 
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           | Date | 
           2008-02-18 (original upload date) | 
          
          
           | Source | 
           Transferred from  en.wikipedia; Transfer was stated to be made by  User:Nousernamesleft. | 
          
          
           | Author | 
           Original uploader was  Nousernamesleft at  en.wikipedia | 
          
          
           Permission ( Reusing this file) | 
           
             Released under the  GNU Free Documentation License. 
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         Licensing 
        
         
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          Permission is granted to copy, distribute and/or modify this document under the terms of the  GNU Free Documentation License, Version 1.2 or any later version published by the  Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled  GNU Free Documentation License.  http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue 
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