1
Published 1992
2
Published 2000
3
by Bennigsen
Published 1985
4
Published 1995
5
by Abdullah al-Ahsan
Published 1992
6
Published 1998
7
by Ozcan
Published 1997
8
by Israeli
Published 2008
9
by Lourie
Published 1990
10
11
12
by Roolvink
Published 2008
13
by Sonyel
Published 1994
14
Published 1994
15
by Wink
Published 1991
16
17
by Trimingham
Published 2008
18
by Poliakov
Published 1991
19
by Smith
Published 2007
20
by Islam
Published 2005