1
2
by Wilmer, Franke
Published 1993
3
by Pi, Chung Ron
Published 1996
4
by Dyson, Tim.
Published 2010
5
by Carley, Michael
Published 1984
6
by Wallace, Iain
Published 1990
7
by Rai, Shirin M
Published 2002
8
by Friedmann, John
Published 1992
9
Published 1992
10
Published 1998
11
Published 2002