A graph-theoretic approach to the analysis of international relations

Bernstein, R.A. , and P.D. Weldon. A structural approach to the analysis of international relations. Journal of Conflict Resolution, 1968, 12 (2, June), 159-81.

Harary, F. A structural analysis of the situation in the middle east in 1956 , Journal of Conflict Resolution, 1961, 5 (2, June) 167-78.

—. Graph Theory. Reading, Mass.: Addison-Wesley , 1969.

—, R. Norman , and D. Cartwright. Structural Models: An Introduction to the Theory of Directed Graphs. New York: Wiley, 1965.