分面浏览：发表日期 |
| 当前检索式 | ((ALL：Calculations)) |
| 限定条件 | ((专题：北京大学)) |
| 2017 120 | 2016 138 | 2015 139 |
| 2014 102 | 2013 82 | 2012 90 |
| 2011 81 | 2010 64 | 2009 77 |
| 2008 48 | 2007 47 | 2006 35 |
| 2005 42 | 2004 45 | 2003 20 |
| 2002 35 | 2001 23 | 2000 18 |
| 1999 16 | 1998 10 | 1997 11 |
| 1996 6 | 1995 7 | 1994 4 |
| 1993 5 | 1992 5 | 1991 2 |
| 1990 4 | 1989 1 | 1987 2 |
| 1986 2 | 1985 3 | 1984 1 |
| 1982 1 |
