1
by Abu-Fadl
Published 1992
2
by Sayeed
Published 1995
3
Published 1995
4
5
Published 1987
6
by Drost
Published 1995
7
by Stromberg
Published 1990
8
9
by Porter
Published 1994
10
by Youssef
Published 1985
11
by Esposito
Published 1992
12
13
14
Published 1992
15
16
by Aldcroft
Published 1993
17
18
19
Published 1989
20