分面浏览：发表日期 |
| 当前检索式 | ((ALL：Approximation ratio)) |
| 限定条件 | 无 |
| 2024 1 | 2023 4 | 2022 9 |
| 2021 13 | 2020 5 | 2019 10 |
| 2018 19 | 2017 31 | 2016 39 |
| 2015 28 | 2014 23 | 2013 21 |
| 2012 16 | 2011 25 | 2010 71 |
| 2009 32 | 2008 25 | 2007 26 |
| 2006 30 | 2005 16 | 2004 13 |
| 2003 13 | 2002 11 | 2001 15 |
| 2000 11 | 1999 8 | 1998 10 |
| 1997 1 | 1996 1 | 1995 6 |
| 1994 5 | 1993 3 | 1992 3 |
| 1989 1 |
