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   2018 (11 publications)    2017 (1870 publications)    2016 (5413 publications)
   2015 (5604 publications)    2014 (5380 publications)    2013 (5029 publications)
   2012 (5136 publications)    2011 (4789 publications)    2010 (5116 publications)
   2009 (4971 publications)    2008 (5178 publications)    2007 (5399 publications)
   2006 (5591 publications)    2005 (5701 publications)    2004 (5179 publications)
   2003 (4939 publications)    2002 (4674 publications)    2001 (4205 publications)
   2000 (3829 publications)    1999 (3425 publications)    1998 (891 publications)
   1997 (679 publications)    1996 (623 publications)    1995 (496 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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