Alcock, Norman1976. 'Toward a Causal Model of Violence', Peace Research, vol. 8, no. 3.
2.
Eckhardt, William, & C. Young1977. Governments Under Fire: Civil Conflict and Imperialism . New Haven, USA: Human Relations Area Files Press, Yale, (in press).
3.
Eckhardt, William, & C. Young1974. 'Civil Conflict, Imperialism, and Inequality', Journal of Contemporary Revolutions, vol. 6, no. 2, pp. 76-95.
4.
Ehrlich, Paul & Anne H. Ehrlich1972. Population, Environment, and Resources. 2nd revised edition. San Francisco: W. H. Freeman.
Galtung, Johan & T. Høivik1971. 'Structural and Direct Violence: A Note on Operationalization' . Journal of Peace Research, vol. 8, no. 1, pp. 73-76.
7.
Galtung, Johan, Guha, A., Wirak, A., Sjlie, S., Cifuentes, M. & H. Goldstein1975. 'Measuring World Development'. Alternatives, vol. 1, no. 11975. pp. 131-158.
8.
Data sources are listed with the tables and figures.