1
Published in 1984
2
Published in 1982
monograph
3
Published in 1989
4
Published in 1996
5
Published in 1993
journal article
6
Published in 1990
7
Published in 1995
8
Published in 1993
9
Published in 1987
journal article
10
Published in 1982
journal article
11
Published in 1992
12
Published in 1996
13
Published in 1998
14
Published in 1995
15
Published in 1995
16
Published in 1993
17
Published in 1981
journal article
18
Published in 1993
19
Published in 1995
20
Published in 2004