1
Published in 1985
2
Published in 1995
3
Published in 1988
4
Published in 1982
5
Published in 1996
6
Published in 1988
7
Published in 1988
monograph
8
Published in 2007
9
Published in 2003
10
Published in 2008
11
Published in 1988
journal article
12
Published in 2006
13
Published in 2003
14
Published in 2000
15
Published in 1994
16
Published in 1992
17
Published in 1992
18
Published in 1995
19
Published in 1998
20
Published in 1990
conference paper or compendium article