1
by Umari
Published 1991
2
by Rashid
Published 1994
3
by Itzkowitz
Published 1972
4
by Van Gorder
Published 2008
5
by Feener
Published 2011
6
7
by Hirschler
Published 2006
8
by Maksudoglu
Published 1999
9
by Kramer
Published 1996
10
by Velayati
Published 2008
11
by McAmis
Published 2002
12
by Shaban
Published 1984
13
by Powell
Published 1993
14
Published 2000
15
16
by Lecker
Published 1995
17
18
by Liu, 1963
Published 1998
19
20
by Itzkowitz
Published 1972