List of original papers (by age)

1975 - 1979
(No. 1 - No. 8)

1980 - 1984
(No. 9 - No. 19)

1985 - 1989
(No. 20 - No. 36)

1990 - 1994
(No. 37 - No. 57)

1995 - 1999
(No. 58 - No. 72)

2000 - 2004
(No. 73 - No. 92)

2005 - 2009
(No. 93 - No.119)

2010 - 2014
(No.120- No.152)

2015 -
(No.153-)