2
Published 2011
Book
3
Published 2007
Book
4
Published 1996
Book
5
Published 1996
Book
7
Published 1989
Book
8
Published 2007
Book
10
Published 2013
Book
11
Published 1995
Book
12
Published 2017
Book
13
Published 1977
Book
14
Published 1988
Book
15
Published 1980
Journal / Magazine
16
Published 1995
Book
18
Published 1997
Book
19
Published 2000
Book
20
Published 1990
Book