50 수학문제

• Arnol'd, Vladimir I. 1991. A mathematical trivium. Russian Mathematical Surveys 46, no. 1 (2): 271-278. doi:10.1070/RM1991v046n01ABEH002727. 
• Arnol'd, Vladimir I. 1993. A mathematical trivium II. Russian Mathematical Surveys 48, no. 1 (2): 217-232. doi:10.1070/RM1993v048n01ABEH001009. 
•  Don Zagier, Problems posed at the St Andrews Colloquium, 1996

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