1
Published 2003
2
Published 1998
3
by B. A. Hamzah.
Published 1989
4
Published 2002
5
Published 2003
6
7
8
Published 1996
9
by Emmers, Ralf, 1974-
Published 2003
10
Published 2004
11
by Than
Published 2005
12
Published 2001
13
Published 2000
14
Published 1985
15
by Davis
Published 1995
16
17
by Haacke
Published 2003
18
Published 2003
19
20
by Abusa