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   2018 (15 publications)    2017 (2624 publications)    2016 (5575 publications)
   2015 (5859 publications)    2014 (5401 publications)    2013 (5040 publications)
   2012 (5144 publications)    2011 (4798 publications)    2010 (5120 publications)
   2009 (4979 publications)    2008 (5186 publications)    2007 (5403 publications)
   2006 (5596 publications)    2005 (5702 publications)    2004 (5180 publications)
   2003 (4939 publications)    2002 (4674 publications)    2001 (4204 publications)
   2000 (3828 publications)    1999 (3426 publications)    1998 (891 publications)
   1997 (679 publications)    1996 (623 publications)    1995 (497 publications)
   1994 (456 publications)    1993 (399 publications)    1992 (359 publications)
   1991 (314 publications)    1990 (292 publications)    1989 (236 publications)
   1988 (203 publications)    1987 (190 publications)    1986 (180 publications)
   1985 (151 publications)    1984 (98 publications)    1983 (121 publications)
   1982 (92 publications)    1981 (76 publications)    1980 (69 publications)
   1979 (54 publications)    1978 (55 publications)    1977 (56 publications)
   1976 (36 publications)    1975 (38 publications)    1974 (20 publications)
   1973 (31 publications)    1972 (27 publications)    1971 (26 publications)
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