1
Published 1992
2
Published 1958
3
Published 1984
4
by Reiterer, Michael
Published 2002
5
by Wagner, Norbert, 1950-
Published 1989
6
7
8
by Zhang, Ming, 1962-
Published 1999
9
Published 1979
10
11
Published 2011
12
Published 2012
13
Published 2004
14
Published 2004
15
16
Published 1990
17
by Shridath S. Ramphal
Published 1988
18
Published 1996
19
20
by Gerner, Kristian
Published 1993