1
by Tucker, Robert W.
Published 1992
2
by Tahir-Kheli, Shirin R.
Published 1997
3
by Nye, Joseph S.
Published 2004
4
5
Published 1996
6
by Okbazghi, Yohannes
Published 1997
7
by Burman, Stephen
Published 1991
8
9
10
Published 1989
11
Published 1991
12
13
14
by Friedman, George.
Published 1991
15
16
by Donaldson, Gary A.
Published 1996
17
by Nitze, Paul H.
Published 1991
18
by Haass, Richard
Published 1997
19
20
Published 1999