(Q55087655)
Statements
1985
1986
2010
2012
1 reference
1972
1972
1 reference
1974
1974
1 reference
1975
1975
1 reference
1976
1976
1 reference
1981
1983
1 reference
1978
1978
1 reference
1979
1979
1 reference
1980
1981
1 reference
1986
1988
1 reference
1988
1989
1 reference
1989
1990
1 reference
1990
1992
1 reference
1992
1993
1 reference
1993
1994
1 reference
1996
1997
1 reference
1997
1998
1 reference
1998
2000
1 reference
2000
2001
1 reference
2001
2002
1 reference
2002
2004
1 reference
2004
2005
1 reference
2005
2006
1 reference
2008
2009
1 reference
2009
2010
1 reference
2012
2013
1 reference
2013
2014
1 reference
2014
2016
1 reference
2016
2017
1 reference
2017
2018
1 reference
2018
2020
1 reference
1 reference