分面浏览：发表日期 |
| 当前检索式 | ((ALL：Formulated problems)) |
| 限定条件 | 无 |
| 2023 4 | 2022 8 | 2021 17 |
| 2020 16 | 2019 22 | 2018 13 |
| 2017 10 | 2016 19 | 2015 23 |
| 2014 28 | 2013 16 | 2012 10 |
| 2011 21 | 2010 56 | 2009 12 |
| 2008 12 | 2007 10 | 2006 14 |
| 2005 13 | 2004 5 | 2003 7 |
| 2002 1 | 2001 3 | 2000 2 |
| 1999 3 | 1998 3 | 1996 1 |
| 1995 1 | 1994 1 | 1992 1 |
| 1991 1 | 1990 1 |
