1
by McWilliams
Published 1993
2
by Porter
Published 1984
3
Published 1990
4
by Goldstein
Published 1992
5
by Porter
Published 1984
6
by Berghahn
Published 1984
7
by Cordesman
Published 1990
8
by Cordesman
Published 1990
9
by Cordesman
Published 1990
10
by Tsouras
Published 1994
11
Published 2008