1
by Cheow, Eric Teo Chu.
Published 2006
2
by Gurr, Ted Robert
Published 1993
3
by Adibe, Clement
Published 1996
4
Published 2011
5
by Mendiburu, Marcos
Published 1996
6
Published 2001
7
by Lewis, Leslie P.
Published 1994
8
Published 1999
9
Published 1996
10
Published 1996
11
Published 1996
12
by Berman, Eric
Published 1996
13
14
by Pierre, Andrew J.
Published 1996
15
by Bush, Robert A. Baruch.
Published 1994
16
by Anthony, Mely Caballero-
Published 2005
17
Published 1997
18
19
Published 1996
20
by Allen, Philip M.
Published 1995