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   2015 (15 publications)    2014 (2295 publications)    2013 (3987 publications)
   2012 (4839 publications)    2011 (4694 publications)    2010 (5051 publications)
   2009 (4928 publications)    2008 (5135 publications)    2007 (5362 publications)
   2006 (5562 publications)    2005 (5679 publications)    2004 (5168 publications)
   2003 (4929 publications)    2002 (4670 publications)    2001 (4201 publications)
   2000 (3822 publications)    1999 (3421 publications)    1998 (878 publications)
   1997 (676 publications)    1996 (613 publications)    1995 (492 publications)
   1994 (453 publications)    1993 (396 publications)    1992 (356 publications)
   1991 (312 publications)    1990 (291 publications)    1989 (234 publications)
   1988 (201 publications)    1987 (184 publications)    1986 (175 publications)
   1985 (148 publications)    1984 (97 publications)    1983 (120 publications)
   1982 (91 publications)    1981 (75 publications)    1980 (69 publications)
   1979 (53 publications)    1978 (54 publications)    1977 (56 publications)
   1976 (36 publications)    1975 (38 publications)    1974 (19 publications)
   1973 (27 publications)    1972 (26 publications)    1971 (25 publications)
   1970 (19 publications)    1969 (15 publications)    1968 (16 publications)
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