1
by Cunningham
Published 1993
2
by Roberts
Published 1991
3
by Vohra
Published 1992
4
by Grasso
Published 1991
5
by Beasley
Published 1990
6
by Cowie
Published 1987
7
by Freund
Published 1984
8
by Guest
Published 1992
9
by Powell
Published 1993
10
by Schofield
Published 2000
11
by Goldstein
Published 1992
12
by Johnson
Published 1991
13
by Mearsheimer
Published 2001
14
by Hamilton-Williams
Published 1993
15
by Lee, 1945-
Published 1994
16
by Parfitt
Published 1987
17
by Hane
Published 1986
18
19
by Hanioglu
Published 2008