1
2
by Chaudhuri
Published 1990
3
by Islahi
Published 1997
4
Published 2000
5
Published 1992
6
by Frye
Published 1993
7
8
Published 2001
9
10
Published 1997
11
Published 2007
12
Published 1992
13
Published 1994
14
15
by Gernet
Published 1972
16
by Spence
Published 1992
17
by Barnes
Published 1993
18
by Li
Published 1959
19
Published 1989
20
Published 2008